License to Kill
From Halopedia, the Halo wiki
License to Kill
License to Kill is an achievement in Halo: Reach multiplayer matchmaking added with the Anniversary Map Pack. It is awarded for splattering 5 people with a vehicle in one matchmade game.[1]
Trivia
The name of the archievement is probaly a reference to the James Bond film; Licence to Kill. The sixteenth James Bond film.