Good job designing this fun little platformer! My only complaint about it is when you die, it doesn't really feel like anything happens. You just teleport, and that's it! I feel like an animation, or at least a sound effect and a slight pause in player input would make the deaths less just teleporting back to the start, and more of an actual reset. It does make it easier to get back into platforming immediately, but the lack of any pause, feedback, or any user agency in the movement and input do make the platforming experience a little worse for wear.
Well done on the level design; however, and the assets if you made them too! The levels were well-made and well-paced.