Proof that this game is not 'Pay to Win'. I have not spent a penny on this game. Despite this I have high amounts of matrices and metamaterials (You'll see that none of my turrets have been upgraded although I do have multiples of modules).
Full Disclosure. Up until now I have intentionally avoided using cheats or exploits.
In this level I did use an exploit which I will describe below;
Minimum Modules Needed
Energy Generator x4 (I combined this with Prisimic Mirror to have 3 turrets with this ability)
Recycle x1 (many of my turrets have been given this ability)
Recycle allows you to sell a turret at full purchase price.
Energy Generator gives you energy even after you sell the turret, until it disappears.
See in the video I have used Gatling gun and missile with this set up to generate a very large pool of energy.
Although it's technically not a cheat, by spamming the turrets like these I have done in this video it makes the game too easy in my opinion....