Awesome game!
TenebrousP, my only constructive criticism would be to make the mouse sensitivity setting more visible and accessible. I actually failed to find the options menu the first time I looked for it. :p
Needs double jumping. Also, guns need to be rethought a bit: sniper is more useful in short range than long range, and the free gun should have greater spread.
 "Accelerator")
 "BeGone: Guerra")