Game freezed when I got to the top of the climb challenge part so I assume it's the end of the game, it's a very good idea, the new game mechanics introduction are very well done and I like precision platforms like these, but the movement could be more fluid for that there's a lot of content on the internet about building precision platform out there, I'm sure it will be worth to follow some of those.
There's this part, when you get the wall jump upgrade that is very pixel perfect, I had to try it like 50 times until I hit the spot to make this jump, I think a lot of people will not finish the game because of this, I thought of 2 ways of making it easier without changing the challenge so much, either you could add a ceiling gap or move that extra tile to 1 position below. In my opinion I think moving the tile down is more interesting.
Anyway, congrats on your first game!!! I hope you keep going on building new games ;)