Kudos on creating most of the assets during the jam!
The idea of a battler where you have different powers in a combined state vs. in a solo state is super interesting. It brings something like Power Rangers or Transformers to mind. The way this one plays has that spirit, but doesn't really have any mechanics to support it, though. All the battling happens as individuals (you literally can't attack in joined-up form), so joining up is only useful to stand on the final checkpoint. Similarly, I love the "STAY!" mechanic.... but there was never any reason for me to use it.
It's got potential, and I'm curious where it could go with a little more time.