The Archenemy gamemode is similar to many shooter's Juggernaut modes, where one person goes against the rest of the lobby. The "Juggernaut" is usually a strong character, capable of dealing massive damage and has extensive health.

In Archenemy, one person is the "Archenemy". This player is very strong and is hard to knock back, but is facing off against the three other players. Whenever an achenemy dies, the person to deal the last blow to him or her becomes the archenemy themselves. Points are earned based on how many kills you got as the Juggernaut and how many times you killed the Juggernaut. Everyone is, for the most part, against each other.