The proof of concept is very well done, but like, i think the reason of that there is too many guards is because you can kill one and no one will take a look in the instant of a guard being killed, so that's weird, but in a way is very funny. 

The feedback on the clicks are well implemented and i think the change of UI theme from the basic would benefit the aesthetic of the game.

I got stuck sometimes when jumping a lot, and when you won the game, the game stills running so you can still interact with the mouse click.

A solid proof of concept that could be more fun with new level concepts. Oh, and i loved the bugged man xd