Controls are here or by hovering over button at game start. A and D keys: Move left and right W and S keys: Aim up or down Up arrow: Jump Down arrow: Shoot Left arrow: Cycle weapon If nothing is highlighted then your beam with infinite ammo is equipped. If one of the icons in the upper right corner is highlighted, you will either have missiles or super missiles selected, which both have limited ammo and capacity, and you stat with zero. Shoot blue doors with your beam to open them, and red doors with missiles. Green doors will be opened with super missiles when the full game is released.