Thanks, and good job getting 100%!
This was my first game I've made in Game Maker, so I'll likely remake the player's code and most if not all of these bosses code's from scratch for the full game, so there will be plenty of nerfs and buffs, and fixes to early hitboxes.
I maaaay have made Boss 29 a bit too hard... But I can't bring myself to nerf him, I like the flow of that guy's fight.