Super cool game! The mechanics felt pretty good and they all felt good. A few pieces of feedback (I see that this is your first game jam). Firstly, I think you might need to add a dead zone for the camera, it feels super jolty when the camera follows the characters every move. Secondly, I think the hitboxes on the spikes / wheels might be a bit too tight, it made the game feel too difficult at times. Lastly, I think you needed more mechanics, or make them cost more coins, because I'd unlocked all the mechanics quickly but kind of lost the urge to keep exploring after that.
Overall, you did a great job, you should be proud with the mechanics, the artwork and the game as a whole, if it's your first jam, you've done an excellent job! I'd be happy to answer any extra questions! Feel free to check out our entry, I think you'll like it :)