Pretty cool game! The character portraits were beautiful, and the music was quite serene and soothing. The voice acting was nice, although the tone of the writing was kinda all over the place, and the constant cracking of jokes made it hard to take any of the story seriously.
The player sprite looked like it was a different resolution and art style from everything else, but the sprite itself and the animation were very nice. It reminded me a bit of old school point and click adventure games for some reason.
The tileset looked a bit generic, and a lot of the areas felt a bit empty and unnecessary, especially since I was pretty much zooming past everything anyway as soon as I got the water pearl upgrade. I think the deep water areas were my favorite, since the darkness effect made the emptiness feel more ominous.
The movement was pretty nice and responsive, and the heavy focus on swimming sections was a cool twist on the Metroidvania genre! Entering and leaving water felt a bit awkward and abrupt, though I guess that's kind of inevitable without dedicated player animations for those things, which is obviously a tall order in a gamejam.
The combat was... functional, I guess? Truth be told, I didn't really bother fighting much of anything outside the scripted ambushes and the final boss. Most enemies were far too slow and predictable to ever hurt me anyway, and bats were kinda annoying to hit due to the player being unable to direct her swings upwards on land, so I just opted to leave them behind. Underwater combat was more interesting thanks to the directional swings, but it was still far easier to just swim past everything.
The final boss was a bit underwhelming, being basically just a regular enemy, but I guess that's gamejam limitations for you! (And hooray for nonbinary representation!)
Overall, the game's a bit rough around the edges and maybe somewhat overextended, but there are definitely signs of greatness in the character artwork and the snappy controls. Good job!