The boss's center bullets are very lethal, also indestructible by bullets. Minions shoot tiny little bullets, which do slight damage. The boss's side gun bullets aren't too lethal, but deal lots of damage. Press Q to shoot energy balls, which do 7 damage. 1/15 of full energy. Press W to shoot bursts of little lasers, dealing 32 damage in total. Needs 1/3 of full energy. Press A for a shield which absorbs damage. Press R to heal. Full energy needed.
It's still in the early stages, comment an attack for the player or the boss, your idea could be shown up here in the game! Credit to @exosphere2015 for the idea for the Boss's Animated Death, or B.A.D. Changelog (after release): 12/12/2015 Added B.A.D. 11/12/2015 Released