This game is awesome! I have no idea how you made so much content in such a short amount of time!
As for feedback, I think the camera should be zoomed out a little more to help see jumps, I think there should be a shadow under the player to tell where you are depth perception wise, the movement animation was not smooth, you kinda just teleport from place to place, especially on moving platforms. Also, I didn't find one of the collectibles, and I was sad when it forcibly kicked me out of the game at the end :( I also think you should add a reset button that teleports you back to the last "checkpoint", since having to run around and find the closest teleporter was quite annoying
Overall though these are just nitpicks, and I think this game is awesome! Probably the game I've played the longest so far :)