Hey!
First of all, thank you so much for your feedback!
I agree pretty much with all you said. At the moment it's less than a prototype and unfortunately I can't dedicate too much time to it, but I'm trying (very slowly) to solve all the issues and also experimenting new stuff.
Thanks for your offer too, but I want to wait before adding any music (or any other sfx). I'll keep you in mind for the future though, I checked out the game and also your youtube channel, you really do amazing stuff!
P. S. You don't die with the skulls. You collect one of them each time you kill an enemy and when you have 3 of them you can do an execution, after you knocked-out an enemy. Probably it's one of those things that I could totally explain in better way! :D