Great game overall!
It was a 9/10 because of a few things. As mentioned in other reviews the item unlocked at the end is really annoying. I barely managed to figure out the WASD keys let you move, you might want to consider putting things like that in the open. Some of the ending upgrades, items, were impossible to get if i got others. But is is still a good game, and advise if you make another one, make a difficulty setting, and make some kind of survival mode.
Again still a great game.