I commend you for a first attempt and trying to learn, but as far as IWBTG fangames go, this really doesn't make the cut. There is an extremely large IWBTG fangame community with thousands upon thousands of releases and about a dozen or so engines which have been made for developing those games over the years which this obvious does not use. If you really are interested in making these sorts of games and want to use your own engine I would recommend looking into the core engines that other people use and looking at the source for those to see how they work. I would also recommend against touting a game's "difficulty" in the description, because while you or your friends might find this difficult it really doesn't even come close actual difficulty, especially when talking about IWBTG fangames. Also, please understand that bad physics and coding does not equal difficulty, it equals bad physics and coding.
P.S. - It's basically sacrilegious to neglect keyboard controls for IWBTG fangames and suggest to play using gamepad. There are a few players who use gamepad, but keyboard is the traditional and technically more proficient way to play.