Game Description & Manual: Use the movement keys to move your player, Left and right keys to move, press the jump key to jump or hold it jump higher, hold the Crouch key to lower your height and dodge bullets, you can also crouch mid-air for highly evasive jumps. These keys are changeable in the options menu.
Use the mouse to aim and click the mouse mouse button to shoot your wwapon. Change weapons with the mousewheel.
Use the modify key to change actions, Modify+Jump will hyperjump and Modify+Changeweapon will change time modes, Modify+ Crouch will let you drop through certain floors.