Confirmed to run on Windows. Congratulations on your first finished game!
I suggest making the view a lot smaller, i.e. showing less things. It's really tiny as it is. And the gravity seems a tad high for my liking, you fall so very fast. It's mostly a matter of experimenting until it feels right, I suppose.
On my computer, the character just floats in the air at the beginning of the level and I can't make it move...:( Can't play, can't rate. Windows Seven by the way...
I suggest making the view a lot smaller, i.e. showing less things. It's really tiny as it is. And the gravity seems a tad high for my liking, you fall so very fast. It's mostly a matter of experimenting until it feels right, I suppose.