In the menu, press the up, down, left, right arrows to select each button or you can click. Press space bar to select the button. If you shoot the missile that the boss shoots, the boss gains +2 hp / 5hp on hard, if the missile hits you, the boss gains +5 hp / 8 hp on hard. Everytime you get hit by an enemy or wall, you get protected by a shield for 2 sec same goes for when you collect a first aid kit.asaaaadw
@griffpatch for health bar