Description: A Dry Bones boss.
Give credit if used.
After the boss is down at 3 HP and he recovers, the game crashes. Also, a minor problem: Perhaps you could improve the clipping of the Dry Bones and Bone projectile sprites? They're not that good in my opinion.
Also, try to make some of the options customisable, for example the speed at which the bones are spawned, the speed of the boss, etc.