An upgrade or key to get rid of every other weapon "powerdowns", i much rather jump in this ditch or hug this wall, or even sleep in these spikes than pick up that awful weapon "downgrade"...
Last map 3rd stage just go 8 damage amps for +200%dmg, 4-6 shield capacity tier III, 2 tier III fuel tanks (just enough to reach the boss), 4 regens and the rest just tier III laser turret thingies...
Stack ALL of the turrets on a single side and everything else on the other side then just move the "utility" side off-screen...
I know it's just exploiting but eff the last level!
Note: Blacking my movement after the boss is dead BUT not all of the adds IS BAD. "Oh it's dead now for the little one...oh... I can't seem to mo-ARGHHHH MY FACE!!!"