Definitely one of the best games I've seen in the jam! The way mechanics are slowly introduced to help build the player up is awesome, making this an excellent metroidvania. I think the platforming was smooth, and I appreciated the wide variety of enemies too.
The only problem I ran into came after I exited the upper right red room (with the 2 fruits); upon exiting, I was teleported to an area off the map where I kept falling. Deleting the data then respawned me in one of the blue rooms without any of my upgrades (thankfully I could get the dash after that and finish the game).
Really good job! Best of luck!