Disclamer: personally I'm not a fan of games where you swap between protagonists on the fly, so during my playthrough I only played with one character at a time - take my feedback with that in consideration. Despite that, the game was still pretty fun, even if it's rather difficult playing that way.
The animations are nice and fluid, and especially the meteor spell is really satisfying to use, though I wasn't able to figure out what the trigger for it to be able to use it. On one hand, I appreciate the levelup perk selection waiting until the battle ends and not interrupting it, but on the other, the upgrade it can give might be good for the currently ongoing fight. I've also picked up equipment but wasn't sure whether it's just auto stat boost or if there's a screen where I have to equip the items.
Haven't ran into any issues, only some weird edge tiles floating in the black out of bound area, and corners generally looking weird. The skeleton archer also doesn't turn around if you go behind it mid-aiming, making it look weird as it tries to shoot backwards. Also, the witch has a hat in the portrait but not on the world sprite. (Also the hat is too small.)