Congrats on getting your game done for the jam!
Man - people say the games I make are tough but this is like the Dark Souls of platforming! I guess like everything else it does take practice but I got frustrated by the spikes that you have to ground spin dash from a fall like in Sonic because when I thought I was rolling through the spikes still got me!
Even though I was failing and raging it did make me want to play it more to succeed and there you have something that is gripping the player so good job on that.
I really like the character sprite - it reminds me of a similar character I made as a kid many years ago. He was called Undon - a vegetable hybrid monster pet with a kid owner called Kevin.
I thought the game was nicely presented with the pixel graphics but I would have liked to have seen a scrolling background of some sort in there just to round it off, you know? Unless you were going with the theme of the world is set inside the depths of a dark void then I guess that would be fine :)
All in all it was a fun little experience I won't forget. Thanks for your effort and taking the time to make it and share it!