Qualification - 5 turret max

[Samseng Yik]

Which turret you build for this qualification?

[Mars]

2 lasers and shield bottom level, and

2 miniguns on opposite sides at mid level: to either help out with boss(cavernous) or kill long range shooters that linger at that height(frost)

Hopefully you get up those watchtowers up quick on this type of run

[Samseng Yik]

I use 4 rail gun
And a drone.
Mainly using lots of defensive machine gun

[Mars]

Originally posted by Samseng Yik:

I use 4 rail gun
And a drone.
Mainly using lots of defensive machine gun

Do you mean the machinegun watchtowers? Absolutely 👍

[Swede]

I think I used 4 drone turrets and one shield-turret at the bottom, and upgraded them fully of course.

But more important for this challenge than what towers you build, is probably to dig down quickly. The faster you can finish the mission, the less waves and tough enemies you have to deal with. If you can dig fast enough to go one dig down every morning, it should be no problem.

Use radar to spot the coal and focus your digging on that, should help a lot!

[Samseng Yik]

Any reason why machine gun watch tower is more highly demanded than rocket/laser?

Machine gun only hit single target per bullet

[Mars]

Originally posted by Samseng Yik:

Any reason why machine gun watch tower is more highly demanded than rocket/laser?

Machine gun only hit single target per bullet

Its a trade off and when in doubt, rocket watchtowers first makes most sense(they are best overall) but their meandering launch pattern often misses small stragglers at their final hovering point, just above layer 1. And given layer 1 also becomes the last layer still able to do damage to those kinda targets, the consistent spread and higher close range dps(even if not exactly AoE) is where machinegun actually shines.

Sadly, end up having to pay much more per rocket watchtower later this way but but by then I usually have swift base to make them even better when I finally do get them. I’m still debating the logistics on this but I guess can go either way.

[weavah9]

Use whatever watchtowers you can get as heavily as possible, slap in couple 311 guns, and the rest depends on what blueprint you find. i probably wouldn't use the flamethrower tower, but a weakness laser can work wonders for shortening the enemy's lifespan, and you'll want something with splash damage, like a railgun or mortar.

And build some night-ability buildings that let you take bites out of the incoming swarm. Drone base is my favourite, because it is fire and forget.

Then sprint to the required depth and get the hell out of there.