At some point game stopped to respond to movement commands. It restored later, but the was no reasons for both of this event.
Also, you can get inside of the shielded area of the boss enemy, but you can't really shot inside.
I liked bullet physics and animation in the game! It feels like this game might be a lo of fun if you'd have more time for level building and overall polish
Tutorial in the game or at least on its page would be highly appreciate,