Thanks, glad to hear you enjoyed it.
The idea behind the final confrontation was that the player should not rely on only one kind of action. I did intend to initially have the lich taunting the player while on the dungeon part, so it could also slip a hint about the final part, but I didn't manage to make it in time. Also, I'm pretty sure there's a bug in the final part, I'd need to find time to check all the dialogue options to be sure.