There is a bar at the bottom which is an energy bar, each attack / defense move takes up energy, each one takes a different amount. (The entire bar is 100 energy, and it refills) Controls: Arrow keys - to move Up arrow 2+ times - double or more jump! (Takes 32 energy) A / D - sword swing. (Takes 16 energy) Q / E - side stab with knife (Takes 8 energy) W - throw sword spinning into air (Takes 24 energy) S - throw knives beneath you while jumping (Takes 40 energy) X - Ninja star in the direction you are facing (Takes 60 energy) Down Arrow (on ground) - invincibility for 3 seconds (Takes 60 energy) Down Arrow (in air) - ground pound hurting everything on the screen and invincibility for 3 seconds (Takes 100 energy) Space - Does what pressing A / D then W would do (Takes 36 energy) Game Modes (all modes go until you exit or die): "Play," normal mode starts easy and get progressively harder, you have three health. "Extreme," starts even harder than the hardest it gets on play, you have one health. "Op Mode," you have unlimited energy, the slimes cannot kill you (although you only see one heart), but there is a secret way to die.