Congratulations on your first game. Pretty adorable spritework and song. Now that you have something done, you can always improve on it by adding mechanics and fixing the glitches.
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When I played I only noticed two things: The wall tile texture glitching and one of the Jasons went straight through the floor once. I think both are kinda Unity's fault. It's collision detection is a little weird sometimes and it doesn't compress sprite images very well, but you can find plenty tutorials on how to solve both these issues realy easily as they are very common. Also, Racoon stealth platformer sounds dope. Play Sly Cooper if you haven't already, it's pretty cool.