As you can see after killing those monsters for this long he was able to gather 2000 exp. Most likely in one day he will be able to level up himself and he just needs to keep going like this to gather exp from these Monsters. On the other hand, naturally he can feel the power of those monsters increased compared to before but still he was able to take care of them very easily.
Well you can say that most of the monsters are already able to reach the Elite grade, but unfortunately they still did not reach the same level as him. So because of that he could still easily take care of all those Monsters.
Well the thing was that all this time he just continued to fight those monsters but he did not know how long he needed to do that to pass the test of the game world. Even though he could get the exp from those Monsters but still he wanted to know how long he needed to fight those monsters.
