Sniper Kill
From Halopedia, the Halo wiki
Summary
The Sniper Kill Medal is awarded for killing an opponent with the Sniper Rifle or Beam Rifle. It is available in all Multiplayer gametypes where a sniper weapon is available and has a Bungie difficulty rating of 1 (out of 10). It is represented by a six-pointed star with crosshairs. After you kill an opponent with a sniper weapon a message appears on your screen that says: "You sniped (player)".
