From Halopedia, the Halo wiki
It is represented by a steel four-pointed star with a blue Laser Kill medal in the center.
- This medal, along with the subsequent ten and fifteen laser killing spree medals are exceedingly difficult to achieve in multiplayer matchmaking as the Spartan Laser itself in Halo: Reach is only capable of discharging four shots before running out of energy. This requires the player to achieve at least one double/triple kill with a laser shot while not missing any other laser shots in one life. The medal is easy to get in Firefight Arcade, as weapons have infinite ammo.