• Gold directness throphy is given when you beat the level within certain time limit.
  
• Each gold throphy can be earn individually, so focus on directness only.
  
• "Casual" difficulty will still award gold thropy.
  
• I experience slight randomness regarding unit targetting and micro-ing your units will increase that randomness, so sometimes you'll only kill 3 towers and sometimes you kill 4 doing the same thing. Everything in this guide are my personal strategy and might not give you gold directness the first try.

Simple

Remember where all the road-blocking meteors land. Always pick the long way around before those metors land and switch to the short path after it lands. Remember to set default path of the end of 1st section to lower path and then switch back to top after tower spawn. The 2nd section is straight forward.

Simple. Just remember sometimes you need to go head up against scorchers to get directness.

Started with 2 APCs. Keep picking the upwards path and you should get 2:25 at the end of first half. Whenever you gain enough money, sell an APC(100$) and buy a Crawler. You should have both APC to Crawlers when you get the shield generator. When going around the last section shown in the screenshot below, buy an Crawler(APC if you are about to miss a tower) as soon as possible. This is because you have to kill everything by the time you reach the top left corner or else you'll get silver directness.
This is the path I took :


Keep buying crawlers until you got 4, then upgrade them. Don't worry too much of looping around the first 2 generator, I took 2 loop each on the first 2 generaters and still got gold.
First go left path :


Then the right path :


The final section :
Go straight for the inner loop, go clockwise once you reach it and keep going in the inner loop.

Rough order of purchase: 3 crawler, upgrade all 3 , 4th crawler, buy APC shortly after reaching top zone.

The first part, go to the top, grab the money and avoid the Behemoth, then go straight to the destination.
The bridge, you can aford to make tiny detours to avoid Scorcher and the Behemoth behind it.
The final bit, first go left

Then top and right (I forgot about the spawning towers on the right zone, simple change the route of my example on the lower left corner of the right zone to kill the Storm Ray)

spend all the money upgrade the 2 crawlers first




Simple, Just be ahead of the plane.
I sold the 2 APC at the beginning and upgrade a crawler, spent all the money into upgrades.
Use air strikes on targets in section 2. You'll get 2 more killing the other towers.
Use decoys near the shore to keep transporter alive.


rough upgrade path: start with 2 crawlers and a shield. upgrade all 3 to lv2(shield last). get 3rd crawler and upgrade.

As long as you saved up 2 Air strikes for forth core you can basically do whatever you want. Take detours for money, take detour to avoid tough zone e.t.c. It's actually quite easy even without this trick, I got gold directness on my trial/first ever run without using it and I still got it.


rough upgrade path: start with 2 crawlers and a shield, upgrade all 3 to lv2.

Quite staright forward as not much path choice.
You can take little detours, here are some I took.
First island, hug the right wall all the time.
The second island I took the scorcher staright ahead, I personally took much less damage (and quicker) that way.

For both third and fourth island I took detour for the money and avoid all towers I can


2 crawler at the beginning, then a tank, then an APC then upgrade APC(might not have enough money, depends). Note that it's extremely hard to keep 2 crawler alive at the beginning so maybe there's other way. I kept them alive by healing them after the first 2 towers and swap the front crawler when it had around 1/3 health left @ the scorcher.

You can't afford to take too much detour except the one in the beginning for that 6 piles of cash.
I took shortest path staright through zone 1 before bridge and hug the left wall for zone 2.
.I had lost units, burnt through my suit powers and couldn't killed a lot of things on the way, it won't be easy.


Start with 2 lv2 crawler, shield and tank. upgrade tank then shield.

General path : go top right, then top left, bottom left, bottom right, then mid and finish.

• minor detours are fine, I took a U shape path at the very beginning to get all the cash.
  
• I took shortest path around corners and staright paths through tower zone. On my gold directness run I loss a lv2 crawler @ the lower right corner, so I guess there are margin for errors.
  
• In the middle I hug the right wall to avoid scorcher, recommend the commander go into alone and take out the energizer with an air strike. Don't be greedy with that air strike as it'll get drain and the area will be just enough to hit 1 target.
  
• I took the upper path (pick the shortest) for the final area. It's actually not that hard as long as you snipe the energizer with air strike.

Start with lv3 crawler, lv2 crawler, lv2 shield and lv2 tank. then upgrade crawler then tank. I didn't upgrade the supply vechical.

General path : took the shortest path possible, could be planned at the beginning with ETA of 6:39. Not that hard.


Start with lv3 crawler, 2 lv2 tanks and a lv2 shield. upgrade shield next
lead with the lv3 crawler when the shields are holding, it will 1 shot normal towers and energizers.

1st section: Hug the upper wall.
2nd section: shortest path (doesn't need to snipe energizer early)
3rd section: shortest path & snipe lower energizer early. Take the path between two energizer to avoid getting into boss firing range early. At the end, take a small detour to get all the cash. If you are planning from the beginning, the ETA at the exit of zone 3 should be 6:04
4th section: as soon as you are sure your units are safe in zone 3, run up and snipe the left energizer. Then take the path below (I snipe the left energizer before I reached the save spot so it's missing in this screenshot):

Final section: loop around the small area next to the lower right cannon of the boss until that cannon is dead. Then go do the same to lower left. When both of them died the upper two should be hurt as well, a single drive through on the upper side of the zone should finish it.