i use the trainer offline for items and souls and from time to time one hit kills NEVER on bosses however I am on the windmill level with mytha and i have burned down the windmill and she is not spawning it shows her health bar at full but she is not anywhere in the room. my brother plays this game too and the last boss did not spawn for him same thing with the health bar of boss and all. looked all over the internet for a solution to my problem and cant find a thing can any one help?
I had the same problem !
But I always backup my saves each day, so I have a save before Mytha or just after Mytha.
If you want PM me.