Wow, this is wild. There's so much content, a truly insane amount of replayability for a jam game.
I managed to win my first run (as Vampire), which took me well over an hour, but I'll definitely have to come back to play some of the other classes & try to beat it.
It's not the first chess-based roguelike I've ever seen (that would be Chogue) but it definitely takes the concept much further.
One complaint I have is that during my first playthrough I feel like I ran into a lot of issues due to rules not working how I thought they would (the little pictures weren't always clear about certain things, the mega-pieces sometimes couldn't move how I expected them too or I had trouble moving them to a place they definitely should have been able to go, etc), but I was still able to win on my first run so it can't have been too unfair. It also took me a while to realize that enemies never make non-capturing moves, which makes the strategy much easier. But I understand that making a strong, more chess-like AI would be a big ask for a game of this complexity, especially in such a short timeframe.
The balance seems pretty fair. There were several levels where my first thought was "wow, how am I supposed to do this?" but then I figured out a way to handle things that worked out fine. That type of feeling is one of the main goals of a roguelike, IMO.
Overall, an extremely strong contender for the win!