This was a crazy huge game for a jam wow. I ended up finishing it in 52min with 61% completion and 2 deaths.
I think the art all looks really nice, it kinda reminds me of GBA games from when I was younger which I love. There is an insane amount of pixel art in this game between all the different biomes and stuff great job. One minor thing I think would improve the pixel art is fully animating the idle animation instead of squashing and stretching the sprite I think would've looked better.
The gameplay was all solid and there were a great number of new powers to unlock throughout the game. I found the wall jumping a little frustrating to pull off since you fall off the wall instantly when you point the analog stick towards the direction you're planning to jump towards, it'd be nice if you stuck to the wall for a tiny bit like super meat boy does. I liked the ability to dash twice a lot and the jumping up waterfalls was fun to spam jump. I would've really liked the fast travel to be unlocked way earlier, I found it in the final area and at that point I was ready to finish the game so I never used it.
The game was a bit too easy overall for my taste. The bomb attack does so much damage I was just one shotting everything with it and once I had 6 or 7 life I was completely ignoring the boss mechanics and just bombing them to death before they could kill me. Maybe some optional challenges would've been nice to add, I think there was some real opportunity for cool platforming challenges with the dashing, grappling hook, and double jump all being so fun to use. Altho I didn't find 40% of the items so maybe there was some tough optional stuff I never found.
I don't mean to be overally negative or anything, I just spent so much time playing this game I had a lot of thoughts I guess lol. Overall I really enjoyed playing thru your game and it is a very impressive jam entry, great work!