Lets also not forget the skill he has which works kinda like a save point. Since he managed to get out of the dungeon, most likely the save point has refreshed to be outside of the dungeon. If so, oooohhh boy....If I were the MC I'd kill myself as much as I like just so I could kill all these bastards again and again and again...
Even if it is still inside the dungeon... He'd just clear it easier next time and had time to think of even greater revengeLets also not forget the skill he has which works kinda like a save point. Since he managed to get out of the dungeon, most likely the save point has refreshed to be outside of the dungeon. If so, oooohhh boy....