Hey first of all I just want to say I'm super happy you liked it enough to delve into the game nuances and details! It always feels awesome to know someone likes what you made enough to spend some real time on it, so thank you!
I totally understand your frustrations about finding all the heads. I think that is probably this games biggest flaw at the moment, and I already have tons of ideas to fix it in a later build. So seriously, thank you for the honest feedback. It will help me make a better version of this game