I know it's supposed to be Diablo x Touhou but your game reminds me a lot of Epic Battle Fantasy in that is has a bit of that 00s "rawr xD" flavor of weebery that's rather charming.
I unfortunately seem to have accidentally hit the stop recording hotkey while playing the game, but the gist of it is that the tutorial is a bit too front-loaded, there is too much time spent walking between enemy clusters, cutscenes look a lot better (and just really high-effort in general) with these models, the character hub is extremely soulful, the world map is a bit confusing with too much insufficiently coded information.