After killing just one beast in the third zone, people probably would have reached level twenty in the class system. Unless they had stolen a bunch of weapons from others, they wouldn't have enough strength and skills to lift a dart-like that. Even if they used all of their points as strength.
Despite that, Rain was able to complete that game ten times. He could have done more by using Limit Breaker and Magic Boost, but he decided to stop at that because Seara and Terra also finished the game ten times and because the chameleon man stopped revealing anything new.
As Rain, Terra, and Seara continued to conquer the darts game, something peculiar unfolded. With each successful throw, the chameleon man's demeanor shifted. Initially friendly and talkative, he began to look more reserved and less friendly. It became increasingly apparent that the cheerful facade was a mask that slipped away with each victory.