Fun game! I have a big head too, sadly I can't use it as this guy does xD
Had some orientation problems with the rotation system. Maybe changed it so you always rotate to the mouse position would be an good idea.
Also, some (rare) times the map spawned with a fish inside me. Kinda frustrating.
The audio has some bugs too. Sometimes it just restarts or something like that. I don't found the conditions to that happens.