I had a couple more minor points that I didn't include because they felt too nit-picky, but here they are:
- Some of the platforms are a bit buggy - after respawning a couple times before the last spike section in level 6, the elevator after the checkpoint just started moving up and down the middle of the shaft, softlocking me. And then again, I fell off the platform at the end of level 6, softlocking me again. But these are pretty expected bugs for a gamejam game.
- The screen-shake on landing was a bit much - a platformer's main mechanic is jumping, and I felt like I couldn't be precise because the screen was shaking while I was lining up. Maybe turn it down a tad.
- Similarly, the animation on dash is a bit confusing - I found it hard to tell exactly where I was - again, look to Celeste for a punchy dash.
- Some indication of when time scaling is going to end - I died more than once because a spike sped up while I was platforming
- If you guys are looking at expanding on this idea - Metroidvania all the way!!! I wanna backtrack with my new powers and open up previously inaccessible routes. I think this concept works better for a Metroidvania than a level-based platformer.
Just to reiterate - brilliant game, all of these things are just small issues with a generally great product.