YouTube brought me here. Incredible achievement. .kkreiger is still very impressive, but this is much smaller and has better gameplay. If you released your dev tools you'd be the father of a genre.
Enemy design is great; the second one reminds me very much of the Gunner from Quake 2. I love that the computers make blippy sounds. The blood and shot splats add a lot.
My one criticism is that it doesn't have run by default (with shift to walk). A lot of players probably don't even realise run is possible. Though I think this type of game is better served with no walk at all; the strength of boomer shooters is speed. Things allowing even faster movement would be great (bunnyhopping, wall hopping, rocket jumping, whatever).