I saw no achievements guides and decided I'd take it into my own hands to create one.

This guide will categorize the achievements the way they are in game ranging from:
Easy to Extreme.

The Builder

Create a custom campaign that contains at least 10 missions

This one should be pretty easy, it's self explanatory.

If you're just doing it for the achievement you can place down 1 brown tank and click the green duplicate mission button until you reach 10 missions. You don't need to save your campaign or publish it.


But you should try to have fun with this one!

Customer

Complete 10 different custom campaigns

I haven't done this one yet... but this one is also self explanatory.

You should just find some easy ones to complete If you just want it. If you have recommendations for some easy or good ones please leave them in the comments and I'll add them to a list here!

The face of a murderer

Kill your first tank

Yep!

Mine your own business

Destroy a tank with a mine

If you press and hold the 'Mine' button you can shoot a mine a short distance from you where you're facing if you don't want to wait for something to tread over it, be careful though since it will blow up on contact with a tank!

If you miss you can shoot the mine with a missile and it'll explode instantly.

Kamikaze

Blow yourself up and another tank with a mine

If you just drive up to an enemy tank and shoot a mine at them you can do this one pretty easily.
You can shoot a mine by pressing and holding the Mine button.

Saving grace

Perform 50 revives

This one can be performed with multiple tanks, whether AI or human.

I haven't done this one yet... but if you have a controller, plug it in and get your other tank shot and revive it by driving up to it while the wrench icon shows up above it.



This one is a bit tedious since you can only 'revive' and ally once per level.

Boss slayer

Destroy your first boss tank

The first boss tank you meet in the campaign is on stage 10, if you have trouble getting there you can play on toddler and it still grants the achievement!

Revolution

Destroy the Rocket King

I haven't done this one yet... and have no idea how.

Saving Private Gary

Rescue Gary

I haven't done this one yet... and have no idea how.

Three in a row

Boot up the game 3 days in a row

It's as simple as booting the game 3 days in a row.

This isn't confirmed but try and boot it up at the same time every day before 12 AM around the same time to be safe.

Out-Sniped

Kill a Green tank with over a 25-block travel distance from you and him

This one can be performed with multiple tanks, whether AI or human.

Green tanks start showing up in Mission 12 'Green is my favorite', but I did this one on Missions 18 'Prison break'.
If you sit in the bottom left and make this shot you should hit the Green, but be careful as the Green can still shoot you from here with his double ricochet.

Tankasso

Draw 100 pixels on the artboard

I haven't done this one yet... but you can find an art board in Tankey Town above Perry's store and interact to paint 1 pixel of color every 10 seconds.

You can find Tankey Town in the Extras sub menu from the main menu.

Finisher

Complete the campaign on any difficulty

This one can be performed with multiple tanks, whether AI or human.

I haven't done this one yet...

Speedrunner

Complete up to mission 20 in under 20 minutes

This one is pretty simple, I got it when I first got to mission 20 on accident.

I wouldn't feel a sense of urgency since most missions go by really quickly anyways, you can play safe and you'll still succeed!

Survivalist

Reach Wave 20 in Survival

This one is easy, personally favorite map is Fortress since the tanks only come from 2 sides.

Falling Lava

Kill the Rocket King by making him fall in lava

I haven't done this one yet...

Maxed out

Get all the possible upgrades at once in Survival mode

This one is a bit time consuming as well as difficult.

You need to afford all of the upgrades in the Survival mode:
Speed: 5, 20, 40, 100 = 165
Rebuild rate: 5, 10, 25, 100 = 140
Armor: 15, 45, 85, 500 = 645
(Nonfunctional) Radar: 15
Fast missiles: 25
(Re-purchasable) Turret: 35

For a grand total of 1025 tank kills!

For the turret, you only need to purchase it once for it to count towards the achievement.
Just load up your favorite survival map and get ready to play for a while, I don't remember what wave I got it at exactly but it's about well into the 30s.

If you're there, you might as well shoot for wave 50 for the other achievement, good luck!

Bombs away

Kill a boss only using mines

You can press and hold the Mine button to shoot a mine a short distance in front of you, you should do it on Mission 10 where you fight Big Red since it's the first boss you encounter.

One shot, one kill

Finish the first 10 levels without missing any bullets

I got this one while trying to do the 'Boom Mode' Hard achievement, I exclusively shot mines at everything in the first 10 levels, and while I didn't get the 'Boom Mode' on my first try since I shot a tank at one point, I did get this one!

Rebound Enthusiast

Defeat a total of 100 enemies with ricocheted bullets

You should be able to get this one passively by just playing the game and doing some simple ricocheting. That's how I got it!

Crash and burn

Kill 100 black tanks

This one can be performed with multiple tanks, whether AI or human.

I haven't done this one yet...

Peace was never an option

Destroy 1000 tanks

This one can be performed with multiple tanks, whether AI or human.

This one is pretty free since you'll be playing the game a lot if you're completing it. I recommend Survival mode since the amount of tanks it spawns is ridiculous!

So close...

Die to the final boss when it has less than 10% HP on the Adult difficulty

I haven't done this one yet... and dying on purpose for an achievement sounds awful. Hopefully you never get this one while doing a normal play through...

Minimalist

Get to Wave 10 of Survival Mode without buying any upgrades

This is pretty easy, you just have to get to wave 10 without upgrades.

I would recommend Fortress because the tanks only appear from 2 sides.

Bounci Master

Get 250 kills from ricocheting your bullets

I haven't done this one yet... but you should be able to get it passively while playing the game.

Rocket Hero

Defeat the Rocket King on the Adult difficulty

I haven't done this one yet... I haven't even encountered him in normal play.

Angry Fruit

Keep a cherry tank raging for 60 seconds

I haven't done this one yet... nor have I encountered the tank mentioned in the achievement.

Shocking Recovery

Get stunned twice and win the game

This one can be performed with multiple tanks, whether AI or human.

I haven't done this one yet... but if I had to guess, it's from the Tesla tanks that teleport around and stun you. Since this one can be done with multiple players I think one of you can get stunned twice and die without any repercussions.

Ghostbusters

Destroy 200 white tanks

This one can be performed with multiple tanks, whether AI or human.

I haven't done this one yet... but you'll probably get this one through all your attempts of trying to beat the main campaign.

High Tech Commander

Destroy the secret commander Beam boss

I haven't done this one yet... ???

Spawnkiller

Make an air-dropped tank land on your mine

I haven't done this one yet...

No one leaves

Kill all civilians in Tankey Town

Enter Tankey Town through the Extras sub-menu and kill all of the civilian tanks.
I would recommend getting the armor near your spawn point before doing this.
As of 1.0.7 there are 8 in total:

2 Brown tanks below Pinky's store

4 tanks at the Bank, 2 Black and 2 Brown

2 Grey tanks above Perry's store next to the Artboard

Remember as soon as you kill the first tank your wanted level is going to start rising slowly so be a bit quick.

Conqueror of the Unknown

Complete the Tanks' Odyssey

I haven't done this one yet...

The Brown Way

Finish up to mission 10 without moving

This one is pretty daunting once you read it since you're essentially a sitting duck for all of the enemies to blast freely, but it tests your ricocheting and parrying skills.

Of course, you are not allowed to move via the movement controls whatsoever, and it is seemingly the only restriction to the achievement. This can make some of the earlier missions seem impossible such as Mission 9 'Lines' where even on Toddler difficulty there's a brown tank sitting at the opposite end of the level out of reach, no matter how you angle your shots you can't hit it.

So how are you supposed to beat it?

Well notice how I said you can't use your movement controls to move, you can however move via other means, this includes using mines to knock yourself back!

Here's a side by side comparison to see how far you can move using this strategy:

And an overlay of the 2 images together:

Using this you should be able to pass the dreaded Mission 9 and then make your way to Mission 10 to finish the achievement!

Now just because you can move doesn't mean you should in all stages. I would recommend using it to get into a safer than spot than your spawn, but never to a point where you are up against a wall as it could prevent you from moving away from it if you aren't careful.

You can shoot the mines to speed up the rate at which they explode and thus your movement. Do make sure that if you are going to dispense a mine, no matter what you do, do NOT tap the button as that would place a mine below you which essentially causes death unless you finish the mission before the mine explodes.

Don't forget to parry the enemies missiles and good luck!

Bouncy Paradise

Finish up to mission 30 with only using bounces

I haven't done this one yet... but as long as you're always facing a wall you can only ever shoot ricochets. Just be careful with where you place mines and you should be good.

Boom Mode

Finish the first 10 missions with only mines (no shooting)

I'm not sure why they put this one in the Hard category but oh well.

This one utilizes the same strategy as getting 'One shot, one kill' where you press and hold the Mine button to shoot a mine a short distance where you're facing. Be sure to exercise patience and wait for the mines to explode the cork walls as shooting any missiles nullifies the achievement.

Try not to get yourself blown up with the mines and you should be golden!

Pro Mode

Finish the campaign in the Adult difficulty

This one can be performed with multiple tanks, whether AI or human.

I haven't done this one yet...

No Power

Kill the Electro King without being electrocuted

I haven't done this one yet...

Marathon

Beat every level starting on Level one. The difficulty must be at least Kid

I haven't done this one yet...

Explorer

Find all secret missions

I haven't done this one yet...

Indiana Jones

Kill a shiny tank

I haven't done this one yet... nor have I encountered one yet.

Still waiting for rescure

Reach wave 50 in any survival map

This one is pretty tough since it's lengthy and requires your full attention.

I would recommend eliminating Tesla and Red tanks as soon as possible as they have the highest chance to end your run. I would also recommend utilizing mines to blow up tanks that are packed together so that you don't have to spam fire as much. Mines only take off 1 layer of armor so for the armored Black, Red and Boss tanks must be spammed to death unfortunately.

You'll max out your upgrades well before you reach wave 50 and you can repurchase a turret every time it's destroyed since you'll be swimming in money. Good luck!

Wanted

Reach 4-star heat in Tankey Town

This one is deceptively easy. I got this by driving around and fighting for my life which is not how I would go about getting it to be perfectly honest.

A much easier strategy is just sitting still in a safe spot and waiting 4 minutes for your wanted level to raise automatically as it's tied to a timer not on how many tanks you destroy.

I don't know if this is the safest spot but I used Pinky's shop underneath one of the shelves where the tanks are on display as seen here:

Be sure to grab the armor at the spawn of Tankey Town and good luck!

No protection required

Defeat the King Tank on adult difficulty without collecting any armor crates

I haven't done this one yet...

You explosion? Me explosion!

Reach wave 15 in survival mode with only using mines

This one is kind of hard as you have to not blow yourself up.

You're probably going to die to yourself more than you will the other tanks' missiles because you have to familiarize yourself with the spacing of the mine toss. Otherwise it's really good for taking out groups of tanks that are bunched up together.

If you're afraid of blowing yourself up then you can place it just barely in front of them since they'll tread onto your mines in a predictable way because they only ever drive towards you, good luck!

Dodgy Tank

Complete up to Mission 50 without getting killed once

I haven't done this one yet...

Dodger King

Finish the full campaign without getting killed once

I haven't done this one yet...

Completionist

Get all achievements

I haven't done this one yet...

Most Wanted

Reach 5-star heat in Tankey Town

This one is extraordinarily easy for this category.

Just hide out in a corner and wait 5 minutes fending off the occasional tank that wanders into your firing range. I chose this spot in Pinky's shop facing minimal conflict.



Don't forget to grab the armor at the Spawn!

The lone wolf

Complete the True Run challenge solo on grandpa

I haven't done this one yet...

Unstoppable Forces

Complete Tanks' Odyssey, from Mission 1, with no lives lost, minimum of 2 players and a maximum of 8.

I haven't done this one yet...