In the game, there's a limitation in each version. No one would be able to level up beyond level 20 and no one would be able to promote their class to mid-level class. The players will get stocked at level 20 and Rank 3 low-level class. That's the cap of version 1 of the game.
But Souta currently doesn't have those limitations. He could level up beyond level 20 even though it was still version 1. His class also advanced to a mid-level class like Battle Mage.
He also had a universal grade artifact with him and a dark grade weapon. This made his overall power become something that couldn't be matched by other monsters of the same level. The only ones who could match him were the players, unfortunately, there's no player in this world besides him.
Overkill. One word to describe how strong he is compared to the second evolution monsters.
The Freezing monkey was confused as its fist stopped before it could reach Souta's face.