Fortunately, or unfortunately, the frost boars always sensed the group when they got within a certain range due to this so they had a lot of battles to fight and a lot of kills to make.
Evan had also told Amy to reduce the range of her heating and stayed just outside it to improve his ice control.
He also performed the crazy action of using Ice magic to fight against frost boars, monsters who possessed tier 2 ice magic from birth.
Naturally, to overwhelm the frost boars near immunity to ice magic, the sheer amount of magic power Evan had to use was on a different level entirely, causing him to always be exhausted after each battle.
However, his hard work paid off as due to constantly being in the cold and forcing himself to use the tier 2 ice magic, adaptive evolution kicked in and made things easier, reworking his body to handle the low temperatures of the magic he was using.
He reached the 25th floor with Ice Resistance and Ice Magic Tier Two appearing on his status board.