The mountainous region despite its environment making it harder for Adam to breathe, it was still quite suited for Adam's combat style. His body's resistance was more than enough to deal with the cold and since it was spacious, it allowed Adam to make the most of his speed, his agility and the Step Skip Skill.
Adam's hunt went quite well, but compared to the night before, wasn't as productive as he kept thinking about his aunt and that was all he spoke to Ava about while he was recovering.
Ava was very understanding and supportive of Adam as she knew just how much he loved his aunt and knew that he only wanted the best for her, but Adam was still restless and didn't understand why he had such a bad feeling.
After hunting in the dungeon for 16 hours, which was mostly spent using the Ethereal Recovery SKill to recover his energy storages and HP between battles, Adam decided to return to reality, just like he had planned.