Assassin’s Creed 3′s first single-player has gone live with the Leave No Witnesses event. In it, players will need to kill as many enemies as possible. Replaying memories counts, so even if you have already finished the full game and its side quests, you still have a chance to win prizes. The top scoring player on each platform will win a Season Pass which unlocks all DLC once upon release. A Season Pass will also be handed out to a random participant on each platform. In order to participate, you will need to sign up through here. Leave No Witnesses is just one of several single-player events planned, alongside the ones for multiplayer. The game released yesterday on PC.