This is a very well put together game jam game! The pallete and sprites changing with the number keys was a really nice touch, and the controls were easy to pick up. I also liked the ability to keep doing runs while keeping powerups. The only complaint I had was that the sword's limited range made it very hard to use as it required to get close to other enemies, and its active frames are long enough that the enemy is able to get a hit in. Other than that, there are a few bugs where when I completed the room, the gates didn't open, as well as enemies getting stuck on corners making them easy targets.
All in all, a very great game with a few bugs that can easily be ironed out!