Found a secret level. It’s surprisingly useful, as it grants you the Fusion Cannon, the last main weapon. It’s interesting, as this is the only weapon you can charge, but if you overcharge it, it starts to damage you instead. Also, it knocks you back when you fire it.
A problem with the weapons is that out of five weapons, four using the same energy ammo. Vulcan Cannon is the only exception. It’s also the only hitscan weapon you have.
I think the design of all the enemies in the first episode is simply brilliant. It is very distinct. Later enemies: not so much. Some look like a flying dildo.
And it’s not just how they look. They are also very hard to spot, and shoot at you a volley of three rockets. Even if you dodge those, you’ll probably get some damage from the splash. Prepare to die a lot to chip damage.
There are a few fresh ideas on the later levels. None of which is very good. One is the mining robots. Another is that keys are sometimes carried by robots as well.