This one is definitely a hidden gem. There are games in this jam with great gameplay and games with great storyline, but this is one of the few that does both.
It's very polished in general. I'm not a huge fan of pixel art, but it works well here, and I think I recognize the palette. The music fits well and the sound effects are spot-on. The gameplay is solid. At first I thought the time reversal was pretty useless (if still incredibly cool), but later on I understood its usefulness. The difficulty ramped up quicker than I'd like in the first dungeon which is probably my only gameplay complaint.
One track sounds like the Game of Thrones theme, which is kind of funny.
However, it does feel like some stuff is missing. There's mention of stores and traders, but these don't exist in game. There's also some decisions which don't seem to have any effect, and lots of talk of wands but this doesn't come into play until the very end of the game.
I was very happy to see that continue worked. I died in a boss battle and when I hit retry, the game crashed. The length is about right but it's definitely at that length where it needs a state save like it does.
Some events seemed out of sequence, but it might have been different characters. I'm still not sure if time runs weird in the crypt, or if I'm just confused. In any case, the plot was riveting and kept me hooked until the end.
The dialogue is a bit shaky. For the most part the awkward phrasing wasn't an issue and the story still worked, but it pretty much killed what I think was supposed to be a gamestonks joke. I'm still a bit confused about some aspects of the setting, but ultimately none of that is the focus, and the story of the Four and the time loop is plenty to push the story forward.
I was pretty shocked by how young the protagonists are, though.
To be honest, I was pretty scared when I saw "bullet hell dungeon crawler" because I suck at those, but I really, really liked this one. I did play on easy mode, though.