I found two bugs.
1: In the slime mother quest where Leah becomes a slime, it is possible to be soft locked and forced to load a save to get out of it. This is done by collecting slimes and using them on the nearest crystals without thinking of where you need to go.
I'd advise removing a few crystals so they are even with the number of slimes in each area or add slimes to the same effect.
2: I lost access to Lv 3 Power after I shut down the game (saving before hand of coarse) shortly after I accepted the slime mother, imp extermination, lost fairy, and demon egg research quests all at once/progressing the first and finishing the last two. Not sure if I broke something by accepting all four at once, but that's what I remember doing before it happened.