Really polished entry, I've seen a lot of games with intentionally slippery controls but yours is the only one where that's actually something you can work around properly.
Controls aside, I felt like the game was a bit on the easy side. It's still impressive that you managed to have so many bosses for the jam.
The downwell inspired graphics are great. But I think you can utilize colors more. You can have separate colors for enemies/parts that require dash attack/shooting to destroy.
The BGM is a bit lacking but the SFX was totally on point.
Overall, great job!