Two for One
|Two for One|
The Two for One achievement icon.
Kill two enemies with one shot from a Spartan Laser in a ranked free for all playlist.
There are certain strategies that increase your chance of getting this achievement.
 King of the Hill
If you're lucky enough to get to play the King of the Hill gametype on a map with a Spartan Laser, you have a great chance to achieve this. Just keep the hill in sight and when you think two enemies are going to line up nicely, laser them.
 Legendary Brawl
Every once in a while, Bungie makes a double EXP weekend playlist called Legendary Brawl. In Legendary Brawl, there are two gametypes that have Spartan Lasers as the default weapons. These two gametypes are probably your best chance of getting the achievement.
 Boarding Vehicles
Another trick is waiting for an enemy to board an enemy ghost on Snowbound.