In Huntsman, only the killers were allowed to tear off the name tags of the victims. Tearing off the name tag of any of the clients would get them disqualified from the game. Ji Sung-Jin got disqualified for tearing off the name tag of one of the clients, Ha-Hwa, resulting in Woo-Jin having to struggle all by himself. 

Woo-Jin was initially cautious from not knowing the other client’s identity. However, following Ji Sung-Jin’s disqualification, he threw away his hesitation and tore off the other players’ name tags. So in that sense, Ji Sung-Jin had somewhat done his part. 

On the other hand, the clients and victims had to find the safe[1] before the killer caught them. The client would win if he found the safe before the killer caught all the victims, and the victims would win if they found the safe before the clients did without being caught by the killer. Last but not least, the killer would win if he managed to eliminate all the victims before either team found the safe. 

However, Woo-Jin had ripped off the last victim, Kim Jung-Guk’s name tag by a hair’s breadth right before Kang Min-Ho found the safe. 

— I was shocked when I saw Genie kicking the wall before spinning once in the air during his fight against Kim Jung-Guk. 

└ You weren’t the only one. Even Kim Jung-Guk had become like a paper tiger in front of Genie oppa....