itch.io

Yeah you've definitely managed to make a fun rage/puzzle platformer! 

I think the only level that didn't fit was level 10 as you mentioned, as there isn't really any puzzle elements but I can see this as more of a rage level. The final jump being precise is cool but I think the character controller isn't quite responsive enough and coupled with the spike moving it feels more like a leap of faith, which seems slightly unfair to the player and not that rewarding.

Level 12 introduces a really cool concept and shows it off in a really fun way, I just wish  it didn't have the random flags popping out as I feel they only serve to annoy on a level that is otherwise very well thought out and requires puzzle solving from the player (it's annoying when you are trying to figure out a puzzle and then suddenly die through no fault of your own is what I'm getting at!).

That being said the way you teach new mechanics and test what the player thinks they know by flipping stuff on its head (this is most present in the first 6 or so levels) is really good, and there was a lot of "gotcha" moments that were done amazingly!