You've got limited ammunition and a sticky trigger. When one gun is done throw it away and snag a new one. Can you clear all six levels of enemies who've got you horribly outnumbered?

WASD - Move
Left Mouse - Start shooting
Right Mouse - Throw gun
F or Middle Mouse - Kick

Orange - Machine gun
Green - Grenade Launcher
Blue - Shotgun
Purple - Buzzsaw (Bounces off walls)
Yellow - Rocket Launcher (Speeds up and explodes)
Cyan - Harpoon (Goes through enemies)