Use WASD or Arrow Keys to move. (hold jump key for larger jump) Running into a wall while in the air will cause the player to slide down the wall. Jumping when wall sliding will allow the player to perform a wall jump. No touchie the spikes or enemies. Flags set a new re-spawn point. Keys allow you to unlock doors. Stars grant one point. Jumping on a ground enemy's head will ki- I mean eliminate it.
Credit to Griffpatch for teaching me basic platformer code. Sigma man.