Very good game, this would be popular for mobile. It took me a while to figure out mechanics and I am glad I did, got very good at it haha. Sadly, didn't managed to complete it because I got stuck between some wall and rhombus T-T.
Critiques:
Could do with some tutorial since I wasn't sure at first that jumps were infinite, I thought that you only had 2 jumps, but now that I think of it, flappy bird also has infinite jumps, my bad. There is also that rhombus bug, but I guess that you can fix it by just teleporting player to the last platform he was standing on, like in Blasphemous 2 when you fall in abyss.
Suggestions:
Since this is a rage game, it would be great to add one of those spinning things that can hit player and make him fall, buhahaha. Actually, you could copy some of those Miriam challenges from Blasphemous 1, I can bet that at least somebody cried while trying to complete that hell, hahaha.