This is a neat little platform game marred by a difficulty curve that crushed me in every level - I didn't finish 3 or 4 as a result. I also didn't learn about being able to dash through the lava until far later than I think I was supposed to (might explain my troubles with level 3), and the air steering didn't feel enough to really make the Celeste-style wall climbing feel natural.
There's a lot of neat ideas, you run through all the best standards (the drop-down dash, the inverted wall jumps, the circling platforms), but along the way there's a lot of little moments of pulling back at the end of jumps and dashes, or sequences of bounces where your commitment too early 3 jumps ago ends up costing you your progress. Don't be afraid to fudge some stuff sometimes to make the player experience better - you don't always have to use physics-based jumping, you could bounce the player predictably from the same spot as long as it's not too noticeable.
In general, this is a neat little platform game that could be beter with some tidying up of spacings of jumps, a little extra guidance with the mechanics, and maybe a re-think of a couple of wall jumping segments.