Pretty cool. How do you get other weapons? Maybe I've just missed it, but I've played two levels and have been picking up ammo for other guns but am unable to s

Pretty cool. How do you get other weapons? Maybe I've just missed it, but I've played two levels and have been picking up ammo for other guns but am unable to switch to them with the numeric keys. Movement system is good and the music & sound effects have grown on me, but the shooting speed is pretty slow. (Again, I still only have the basic pistol though.) Edit: Never mind, just found a shotgun on the third map. I maintain that the pistol is a bit slow considering the pace of the game otherwise.