Woaw! That is a really nice and complete game. I did go through all of it, but I really wanted to keep on playing.
I ended with a laser + mortar combination, that game me sustained + burst damage, but my legs broke and i became slow as hell due to the only quadruped i found. Very exciting gameplay, and good job on the level design: the door mechanic with the coloured cables was simple to understand; and the hidden places here and there make you want to go everywhere for better loot :D
Amazing work!