If the boss has multiple instances in which you fight him, I think it would be pretty cool to fight him like this, in which he can use the unactivated orbs as wrecking balls to smash the player with.
By the way, keep up the good work, much improvement. That glass dome needs some work, though. Throw in some highlights/speculars, I'm not sure. Research how glass works, and work on the form a bit. It looks flat/unfinished. (which it might be, anyway)