I cannot praise this game enough. Let me go over all the things I love about it:
The art, if a little simplistic, does its job well enough.
The main mechanic is genius, changing up the game without totally alienating the player. When was first introduced, I was like "oh boy, another useless movement ability" but it turned out to be necessary and very fun to use. That brings my to my next point:
The enemy bullet patterns are well-designed and varied, and most importantly they force you to use the swap mechanic in interesting and creative ways.
The story is kind of basic, but it helps the game stand out more and the gameplay feel more important compared to some games.
The final boss is everything a Final Boss should strive to be. It forces you to use everything you've learned. It changes things up, but not enough to make it feel like a completely different game. It was hard, but very fair. I died three times when the boss had just a sliver of health yet, which made me want to keep trying. It also means the boss was perfectly balanced.
Overall this is an amazing game and probably my favorite of this jam. I would love to see this expanded upon in the future.
I would love it if you could check out my submission as well :)