The crab can slide either forward or backward, air dash, and use their weapon's scope.
Sliding cannot be done in water or lava.

Sliding is also always available when landing, so to maintain top speed always jump when a slide is about to end.

Air dash retain the crab's momentum going into the dash, and is mostly useful for conserving momentum as it doesn't give a lot of height.
Dashing refills once per second in the air, and instantly on the ground.

Scoping in with your weapon will slow down time for a moment, with some exceptions. Notably, air dashes will still refill at the normal rate, so scoping in while midair lets you stay airborne for significantly longer than you otherwise would.

Jumping just as you hit a booster jet will cause it to launch you much further or higher than it normally would.

Hitting reward crowns while your crab is standing on them will launch you with mixed results.

There are a total of 18 ranged weapons in the game currently.

This section is accurate as of 9/7/24

I will describe them first by their proc rate, bullet count, ammo count, and then any special characteristics of that particular gun.

The proc coefficient is a given gun's chance of activating any luck-based perks, such as Homing Shot.
Guns with 100% have the highest chance of activation, which would activate something like Homing Shot 100% of the time. Guns with 3% have the lowest rate of activation, which would activate Homing Shot 3% of the time.

Ice Staff - This has a 37% proc rate, high rate of fire, and fires mortar bullets with high velocity. It has 30 ammo. It implicitly has level one Ice Shot, with a 4% rate of activation. The point you are aiming at will have ice bullets dropped from a few meters above that point, including any luck-based perks. This makes some perks like Arcane Blast viable to use as a long range, as the bullet's origin point is directly above the target.

Marksman Rifle - This has a 50% proc rate, and fires 3 projectiles for 12 damage each with high velocity and low spread. It has 16 ammo.

Arcane Wand - This has a 77% proc rate, and fires one exploding projectile for 20 damage on a direct hit. It has 8 ammo. It implicitly has a level one Arcane Shot with a 30% chance of activation.

Cluster Launcher - This has a 50% proc rate, and fires 6 projectiles for 4 damage each with low velocity and high spread. It has 6 ammo.

Blade Launcher - This has a 30% proc rate, and fires one piercing projectile which hits for 5 damage four times per target. It has 9 ammo. Due to a lag prevention update, sometimes hits will be combined.

Minigun - This has a 17% proc rate, and rapidly fires one bullet which deals 3 damage. It has 200 ammo. It implicitly has level one Escalating Shot.

Rocket Launcher - This has a 100% proc rate, and fires one explosive projectile which deals 50 damage on a direct hit. It has 5 ammo.

Orb Launcher - This has a 27% proc rate, and rapidly fires one orb which deals 8 damage. It has 42 ammo.

Crossbow - This has a 60% proc rate, and fires seven piercing arrows for 4 damage each. It has 12 ammo. It is compatible with Triple / Arc / Square / X shot which will add additional arrows per shot.

Laser Cannons - These have a 10% proc rate, and rapidly fires one high velocity laser rapidly for 3 damage. It has 50 ammo. This is a dual weapon.

Seagle - This has a 50% proc rate, and fires one bullet for 25 damage. It has 12 ammo.

Flamethrower - This has a 27% proc rate, and fires one piercing bullet which hits twice for 1 damage each. It has 45 ammo. It implicitly has level four Fire Shot, with a 19% rate of activation.

Sniper - This has a 100% proc rate, and fires one piercing bullet for 100 damage at a low rate of fire. It has 6 ammo.

Burst Pistol - This has a 27% proc rate, and fires five shots per trigger at 8 damage each. It has 30 ammo, which is depleted in six trigger pulls.

Auto Shotgun - This has a 40% proc rate, and fires six shots for 4 damage each with high spread. It has 16 ammo.

Dual Pistols - These have a 30% proc rate, and fire one bullet for 6 damage. They have 24 ammo. This is a dual weapon.

Dual Shotguns - These have a 40% proc rate, and fire six bullets for 6 damage each. They have 6 ammo each. This is a dual weapon.

Auto Rifle - This has a 27% proc rate, and rapidly fires one bullet for 12 damage each. It has 40 ammo.

There are currently six abilities in the game.
Since the turret rework, abilities can now spawn turrets if you have a turret perk. This makes Grenade or Grappling Hook much better than something like Electro Globe, as it increases the rate you can produce turrets.

Electro Globe - This has a 10 second cooldown, and fires a slow-moving orb that rapidly deals low damage and moderate electric stacks to nearby enemies. Upon hitting an enemy, the ground, or after travelling three seconds it will detonate and create a persistent electric field for one second.

Ice Blast - This has a 6 second cooldown, and fires a fast-moving ice shot. When it hits an enemy, it will form an ice wall, dealing 5 damage 5 times per second and rapidly applying ice stacks. On a stationary target, this can apply 175 ice three times.

Laser Beam - This has a 6 second cooldown, and will fire a fast-moving laser beam. When it hits an enemy or the ground, it will form a large sphere which will deal 180 damage over six seconds.

Black Hole - This has an 8 second cooldown, and throws a black hole projectile that deals damage to nearby enemies. Upon hitting an enemy, a wall, or travelling for 1.5 seconds it will form a black hole that pulls enemies and deals minimal damage.

Grappling Hook - This has a 5 second cooldown, and throws a grappling hook that will make your crab jump towards it when it hits an enemy or a wall. The jump will be more powerful if the distance between you and the hook is larger. It deals 70 damage, and is far more useful as a mobility skill for collecting bonus chests than as a damaging ability.

Grenade - This has a 5 second cooldown and throws an explosive projectile that hits for 150 damage on a direct hit.

There are currently four melee weapons in the game.

Claw - Small AoE, 360 degrees strike, 1 second cooldown. Hits for 50 damage with a cooldown.

Dagger - Smallest AoE, 360 degrees strike, 1 second cooldown. Rapidly hits for 40 damage 5 times, with a cooldown of 1 second. Each individual strike can reapply perks like Ice Claws up to five times per strike.

Hammer - Largest AoE, 5 second cooldown. This weapon will make you jump in the air, and counts as a dash for some perks like Lightning Dash if done in the air. Upon hitting the ground, hits for 125 in a large area and leaves a magic circle behind that rapidly deals 1 damage to nearby targets. This strike will also knock the player away from the strike area.

Pickaxe - Longest AoE, 5 second cooldown. This weapon will make you jump in the air, and counts as a dash for some perks like Lightning Dash if done in the air. Upon approaching within a few meters of the ground, will create a chain of eight melee AoE strikes for 33 damage each in a straight line forward. Each individual strike can reapply perks like Ice Claws multiple times, up to four times per target on large bosses.

All rocks have an innate 1% chance to drop an item for each player when destroyed - Driller increases this chance. Rocks will not drop items if no enemies are alive.

Meteor fragments are rocks with a 100% chance to drop an item, but they will also not drop an item if no enemies are alive.

When rocks drop items, they will drop an item for each player in multiplayer games.

Healing rocks are green - they will heal 10HP rapidly in a small zone. Sometimes these rocks will drop multiple zones, and standing in multiple zones at the same time will increase your healing.

Max health rocks are golden and sparkling - they will alternate between increasing your HP by 1 and a minute fraction of your max HP each tick. Sometimes these rocks will drop multiple zones, and standing in multiple zones at the same time will increase your maximum HP gain.

Fire rocks are orange. They produce areas of fire, which apply fire debuff.

Lightning rocks are purple. They produce areas of lightning, which apply lightning debuff and are highly effective against crowds.

Poison rocks are green. They produce areas of poison which apply poison debuff.

Ice rocks are blue. They produce areas of ice which apply frozen debuff.

Energy ring rocks are red. They produce an energy ring which deals damage and high knockback.

Black hole rocks are dark purple. They produce a black hole which will suck most enemies and projectiles to its center. These are very rare, and look incredibly similar to lightning rocks.

Crystals drop crystals when destroyed.

When a rock deals damage, that damage "belongs" to the player who destroyed that rock, meaning eliminations will be counted as yours and you gain crystals for each enemy the rock kills.

• Flex I - 79.0% - Defeat an elite without taking any damage.

This is a freebie - avoiding damage from a boss will happen if you either have a strong build or are in multiplayer and the boss is not actively targeting you.

• Crab Champion I - 77.4% - Get a win on any difficulty.

A win is counted as exiting the boss level in the third zone. Looping will count as a win once you've started the first level of the loop.

• Flex II - 61.3% - Defeat a boss without taking any damage.

This is easy to do, either kill the boss before it has a chance to shoot you or play at enough range that you can react and dodge whatever it throws at you. Ice damage is helpful.

• Looper - 54.9% - Get a win after looping at least once

The game normally ends at level 21, and you can choose to win on multiples of 21 (42, 63, 84, etc.)

• EZ - 50.2% - Defeat a boss in under 10 seconds.

Having high damage helps for this one, applying poison is a very effective damage multiplier. This should happen whenever you get lucky and have a stronger than usual build, but can also be done on Easy mode effortlessly.

• Auto Rifle Master I - 48.6% - Get a win with the Auto Rifle on any difficulty

This achievement can be completed at the same time as the Nightmare variant.

• Ultra Damage - 43.2% - Deal over 100,000 damage in a single shot.

You should build global damage AND weapon damage, plus apply poison for this to work. Easily achievable post-loop.

• Big Spender - 35.8% - Make 100 purchases at shops in a single run.

This is much easier to achieve with the Ring of Value and no shop size expanders, using the 75% discount to purchase multiples of whatever the golden shop pillar is offering.

• Millionaire - 33.7% - Get a win with over 1,000,000 unspent crystals in your inventory.

It is very easy to scale crystal income, and shops will not scale as quickly during loops. Doing this by level 30 is not realistic.

• Tank - 33.1% - Get 10,000 max health on a single run.

Getting a few levels of Big Hearts makes this easy, or picking up a few levels of any of the perks that can increase your max HP by 1 per kill.

• Crab Champion II - 31.7% - Get a win on Nightmare difficulty.

Nightmare is intimidating if you're new to it, but the key is to continue moving at high speed. If you stand still, you will lose.

• Dual Shotgun Master I - 31.3% - Get a win with the Dual Shotguns on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Marathon - 30.4% - Survive until island 100

This can be done at the same time as Speedrunner III.

• Minigun Master I - 30.3% - Get a win with the Minigun on any difficulty

This achievement can be completed at the same time as the Nightmare variant.

• Silver - 30.1% - Reach Silver account rank

Silver is challenge level 2-10, this one is very easy.

• Skilled - 30.1% - Get 3 wins in a row on any difficulty.

If you quit to the lobby before dying, it will not reset your winstreak.

• Speedrun I - 27.3% - Clear island 21 in 16 minutes or less

This can be done at the same time as Speedrun II and III. Easy mode recommended.

• Orb Launcher Master I - 26.9% - Get a win with the Orb Launcher on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Rocket Launcher Master I - 26.4% - Get a win with the Rocket Launcher on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Playing With Power - 25.6% - Level a mod or perk to level 20 in a single run

This is very easy if you have the Ring of Value, some solid economy and use the golden shop pillar.

• Cluster Launcher Master I - 24.7% - Get a win with the Cluster Launcher on any difficulty

This achievement can be completed at the same time as the Nightmare variant.

• Auto Shotgun Master I - 24.2% - Get a win with the Auto Shotgun on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Crossbow Master I - 23.2% - Get a win with the Crossbow on any difficulty

This achievement can be completed at the same time as the Nightmare variant.

• Blade Launcher Master I - 22.0% - Get a win with the Blade Launcher on any difficulty

This achievement can be completed at the same time as the Nightmare variant.

• Dual Pistol Master I - 21.7% - Get a win with the Dual Pistols on any difficulty

This achievement can be completed at the same time as the Nightmare variant.

• Sniper Master I - 21.7% - Get a win with the Sniper on any difficulty

This achievement can be completed at the same time as the Nightmare variant.

• Roller - 21.4% - Reroll shops 50 times in a single run.

This is easy to do on loops as long as you're intentionally rerolling a lot. XL Totems can increase the reroll limit per shop.

• Challenger I - 20.0% - Get a win on any difficulty with 5 or more difficulty modifiers active.

Diamond mastery requires all difficulty modifiers active, this should be a freebie.

• Maxed Out - 19.7% - Fill all mod and perk slots in your inventory during a single run.

This is difficult now that melee and ability mods have their own category. You will need to go out of your way to collect enough of those.

• Laser Cannons Master I - 18.0% - Get a win with the Laser Cannons on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Flamethrower Master I - 17.6% - Get a win with the Flamethrower on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Pro - 17.6% - Get 2 wins in a row on Nightmare difficulty.

You can exit to lobby and it will not reset your winstreak. Nightmare winstreaks are easier in multiplayer - any one person can get unlucky and get oneshot, but the odds of everyone dying at the same time is much lower.

• Vandal - 17.5% - Destroy 25 totems in a single run.

Totems are destroyed when overused, damaged (Glass only), or ignored for too long (Fuse only).

• Arcane Wand Master I - 17.1% - Get a win with the Arcane Wand on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Burst Pistol Master I - 17.1% - Get a win with the Burst Pistol on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Recycler - 14.3% - Salvage 100 pickups in a single run

This can be done by salvaging your entire inventory (and your teammates if needed) at the end of a winning run. Easier on loop, and doesn't actually require you to win after salvaging everything.

• Crab Champion III - 14.1% - Get 5 wins total on Nightmare difficulty

Weird that less than 1/5th of the playerbase has this one.

• Challenger II - 13.8% - Get a win on any difficulty with all difficulty modifiers active.

This is required for any Diamond completion.

• Minigun Master II - 12.8% - Get a win with the Minigun on Nightmare difficulty

High rate of fire means you can have an extremely good start to a run with Money Shot. Starting with Accelerating Shot means you'll want to pick up Efficiency from Luck chests early. This is a scaling weapon.

• Seagle Master I - 12.8% - Get a win with the Seagle on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Speedrun II - 12.6% - Clear island 56 in 40 minutes or less.

This can be done at the same time as Speedrun III. Easy mode recommended.

• Rocker Launcher Master II - 12.2% - Get a win with the Rocket Launcher on Nightmare difficulty

The Rocket Launcher's ability to deal splash damage means you can focus much more on movement without sacrificing damage. High proc rate also makes split shot and any other multi shot modifiers extremely viable.

• Greedy - 11.5% - Defeat a boss with at least 5 greed perks in your inventory

This requires 5 DIFFERENT greed perks. Much easier during loops, as greed perks will show up in shops more regularly past island 42. Greed perks can also be claimed from Greed totems, and some islands will have Greed rewards. This one is mostly just dumb luck to find enough greed perks - good luck.

• Cluster Launcher Master II - 11.2% - Get a win with the Cluster Launcher on Nightmare difficulty

This is a good weapon, and easily becomes a lag machine on winning runs. Aura Shot helps.

• Orb Launcher Master II - 11.2% - Get a win with the Orb Launcher on Nightmare difficulty

This weapon's poor accuracy and slow shot velocity doesn't feel like it makes up for the high DPS it provides. Improving those stats should make winning Nightmare with this gun very easy.

• Auto Rifle Master II - 11.1% - Get a win with the Auto Rifle on Nightmare difficulty

This is a very straightforward weapon, no special considerations needed for a Nightmare win.

• Challenger III - 11.1% - Get a win on any Nightmare with all difficulty modifiers active

Doing this and then looping is the requirement for Diamond completions.

• Auto Shotgun Master II - 10.9% - Get a win with the Auto Shotgun on Nightmare difficulty

The Auto Shotgun is a very good Nightmare weapon. No special considerations needed.

• Crossbow Master II - 10.7% - Get a win with the Crossbow on Nightmare difficulty.

Innate piecing and arc shot carry this weapon. Bouncing shot is helpful as well.

• Unstoppable - 10.6% - Get a win with over 7500 eliminations

This is easiest in singleplayer and on easy mode. Virtually guaranteed by island 150, earlier if you focus on Horde/Harvest maps.

• Dual Shotgun Master II - 10.3% - Get a win with the Dual Shotguns on Nightmare difficulty

This has the best cosmetic in the game aside from Golden Crab.

• Laser Cannons Master II - 10.3% - Get a win with the Laser Cannons on any difficulty.

Laser cannons have a high fire rate and low proc rate, so increasing their damage directly will help more than trying to build something like Spark Shot.

• Sniper Master II - 10.3% - Get a win with the Sniper on Nightmare difficulty.

This weapon's high DPS, high proc rate, innate piercing, and good accuracy at long range makes this a very good weapon for Nightmare.

• Frugal - 10.1% - Get a win on Normal difficulty with 5 or less shop purchases.

It's straightforward, no special considerations. You can just get carried in multiplayer if you're really struggling.

• Dual Pistol Master II - 10.0% - Get a win with the Dual Pistols on Nightmare difficulty

This weapon cannot scope in, so you can't use bullet time. Overall it's nothing special, and probably the worst weapon in the game.

• Blade Launcher Master II - 9.9% - Get a win with the Blade Launcher on Nightmare difficulty.

This weapon's innate piercing and respectable firerate make it a solid contender for Nightmare.

• Marksman Rifle Master I - 9.8% - Get a win with the Marksman Rifle

This achievement can be completed at the same time as the Nightmare variant. Low completion rate due to being a new weapon.

• Flamethrower Master II - 9.6% - Get a win with the Blade Launcher on Nightmare difficulty.

This weapon's innate piercing, high firerate, and unusually high proc rate make it a good Nightmare weapon.

• Arcane Wand Master II - 9.3% - Get a win with the Arcane Wand on Nightmare difficulty.

This weapon's explosive projectiles and high proc rate make it a solid contender for Nightmare, even if the Arcane damage doesn't do a whole lot.

• Gold - 9.2% - Reach Gold account rank

Gold is challenge level 10-20, this one is very easy.

• Burst Pistol Master II - 8.1% - Get a win with the Burst Pistol on Nightmare difficulty.

Solid weapon with good firerate and proc chance. Nothing special needed for a Nightmare run.

• Seagle Master II - 7.6% - Get a win with the Seagle on Nightmare difficulty.

Very strong base damage, just specialize into gun/global damage.

• Slice And Dice - 7.6% - Get a win without firing your weapon

Melee and special attacks are both allowed. Very easy achievement, especially with how much support melee and specials have at the moment.

• Gunslinger - 7.5% - Get a win with all weapons in the game.

If you really wanted to, you could do this on Easy mode.

• Marksman Rifle Master II - 6.3% - Get a win with the Marksman Rifle on Nightmare difficulty.

This gun actually fires three bullets per shot and has a decent proc chance to boot.

• Master - 6.0% - Get 5 wins in a row on Nightmare difficulty.

You can quit to lobby if you haven't died yet, and it preserves your winstreak. Multiplayer recommended.

• Sapphire - 5.5% - Reach Sapphire account rank

Sapphire is challenge level 20-30, this one is easy.

• Speedrun III - 2.4% - Clear island 140 in 70 minutes or less.

The only thing that could make this difficult is taking too long in shops, or enemies getting stuck behind terrain to make you lose them. Homing shots makes this a very easy achievement, and can be completed in easy mode. It used to be level 100!

• Flex III - 4.9% - Clear the first biome on Nightmare difficulty without taking damage.

You can either do this in multiplayer and hope your teammates will carry you, or on singleplayer and be very careful about positioning and damage. Ice staff recommended, as it lets you stunlock any high priority targets.

• Solid Gold - 4.1% - Fill 20 weapon mod slots with legendary weapon mods.

Your weapon has more than 20 slots, so this is achievable without too much effort. Multiplayer recommended, as then no single player has to hold 20 legendary weapon mods (which typically don't contribute as much damage as common ones!)

• Emerald - 3.8% - Reach Emerald account rank

Emerald is challenge level 30-42. This isn't very difficult.

• Ice Staff Master I - 3.7% - Get a win with the Ice Staff on any difficulty.

Probably the best weapon in the game right now for many different reasons. Low completion rate is just because it's new.

• Arcade Champion - 3.4% - Get a high score of 300 in the Arcade minigame.

Scoping in will enter bullet time and slow you down while the timer goes at normal speed - don't scope. This is mostly luck based, and you need to hope for enough red rocks to clear 300 targets.

• Pickaxe Master I - 3.3% - Get a win with the Pickaxe on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Hammer Master I - 2.8% - Get a win with the Hammer on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Emerald - 2.8% - Reach Ruby account rank

Ruby is challenge level 30-50. This isn't difficult.

• Electro Globe Master I - 2.7% - Get a win with the Electro Globe on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Ice Staff Master II - 2.7% - Get a win with the Ice Staff on Nightmare.

The Ice Staff's origin point for bullets is two meters above the ground. Mace shot will be fired straight down, Arcane Blast has functionally unlimited range, piercing and bouncing shots will hit enemies twice for 300% damage.

• Flawless - 2.6% - Get a win on Normal difficulty without taking any damage.

This one sucks, and avoiding lava in Zone 3 is probably the worst of it. You can quit to lobby if you take a hit to retry.

• Pickaxe Master II - 2.6% - Get a win with the Pickaxe on Nightmare.

The Pickaxe can hit the same enemy more than once, and is a free win if you get Ice Claws.

• Claw Master I - 2.4% - Get a win with the Claw on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Grenade Master I - 2.3% - Get a win with the Grenade on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Hammer Master II - 2.1% - Get a win with the Hammer on any difficulty.

The Hammer is the best weapon for farming Assassin stacks, but the aftereffect damage zone will deal enough damage that enemies passing by will not count as being oneshot.

• Electro Globe Master II - 2.0% - Get a win with the Electro Globe on Nightmare.

Good for farming Horde maps, very bad on single targets.

• Holdout Champion - 2.0% - Get a high score of at least 50 in the Holdout minigame.

Use the Ice Staff so you can freeze high priority targets, and Ice Blast so you can't be caught by surprise while reloading. Starting on Round 30, bosses will begin to appear.

• Black Hole Master I - 1.9% - Get a win with the Black Hole on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Crab Legend - 1.9% - Complete all challenges

This one gives you a skin to assert dominance and prestige over less skilled players. If the game updates to add new achievements, you lose the skin until you're a Crab Legend again!

• Ice Blast Master I - 1.9% - Get a win with the Ice Blast on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Diamond - 1.6% - Reach Diamond account rank

Diamond is challenge 50, after one loop. Because this is the maximum, you need to achieve it with every single weapon, melee, and ability. Have fun!

• Ice Blast Master II - 1.5% - Get a win with the Ice Blast on Nightmare.

This is probably the best ability in the game, Ice Blast does a ton of damage, stunlock, and has a persistent AoE.

• Black Hole Master II - 1.4% - Get a win with the Black Hole on Nightmare.

I judge the Hole by the content of its character, personally.

• Laser Beam Master I - 1.4% - Get a win with the Laser Beam on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Claw Master II - 1.3% - Get a win with the Claw on Nightmare.

This used to be the only melee weapon, but now only 1.3% people have completed the game with it!

• Grenade Master I - 1.3% - Get a win with the Grenade on Nightmare.

See previous achievement.

• Dagger Master I - 1.2% - Get a win with the Dagger on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Laser Beam Master I - 1.1% - Get a win with the Laser Beam on Nightmare.

If you stack enough Big Ability, you don't actually need to use your gun or melee.

• Dagger Master II - 0.9% - Get a win with the Dagger on Nightmare.

The Dagger hits for a lot of damage, and applies elemental claw attacks four times. It's very good.

• Grappling Hook Master I - 0.9% - Get a win with the Grappling Hook on any difficulty.

This achievement can be completed at the same time as the Nightmare variant.

• Grappling Hook Master II - 0.7% - Get a win with the Grappling Hook on Nightmare.

This is not a useful ability, but at least you can use it to collect all the secret bonus chests.

• Ultra Chaos Champion - 0.2% - Get a win on Ultra Chaos difficulty.

This is actually very easy. You don't need to toggle difficulty modifiers, and the game spawns in much higher rarity gear for you.