Maybe that's just me, but I really never understood what I was supposed to do in this game. I think I identified mouse and space key on screen but I couldn't really tell what they did or if they did anything at all. When I started mashing my keyboard I got to the next stage where I still didn't know what I was supposed to do and decided to quit.
Maybe add a short descriptions for smooth brains like me.
Graphics and presentation were nice though, the music got repetitive after a while but not bad for your first attempt.
I'll try again if there is some kind of help on how to play this game, I don't think there's a problem adding that after submission deadline as you don't change the game but just your game page :)