"Won a duel against another player"
This achievement unlocks when a duel is fought and won in a multiplayer game. One character iniated the duel by striking another with a melee attack. The duel is then confirmed by a retaliatory strike. the last of the pair to remain standing at the end of the resulting gunfight wins the duel.
- The Xbox 360 achievement gives 15 gamerscore.
- The PlayStation 3 trophy gives a "Bronze" trophy.
- This is a reference to of Warcraft, in which there is an identically named achievement for winning a duel.