Nice entry! I agree with all comments made so far. My only additions are I think the health/morph isn't quite enough as mechanic, it was too easy to cheese by trading a little, then just getting a few health/morph pickups and going to the flower. Obviously jams leave little time for tweaking and it was still fun, just a thought. Also, I think the vertical traversal was a really cool idea. Other platformers let you drop and jump through the ground but having the transform made it feel like a cool ability (even if the collision was a little janky). Without having looked at the code, one possible way to solve the jank is actually locking out player control after choosing to go up or down, playing a VERY quick animation and use a raycast to see where the top/bottom is and a tween to go slightly past it. Fun game, keep it up!