Lee R. Wilson Memorial
From Halopedia, the Halo wiki
Lee R Wilson Memorial
The Lee R Wilson Memorial is a Halo 3 multiplayer achievement. It is awarded for getting five grenade sticks in a single game of ranked free for all playlist. It gives the player 5 Gamerpoints.
The achievement is named after Lee Wilson, a Bungie employee who frequently uses grenades to stick opponents.[1]
It is represented by a 16-pointed star with a plasma grenade with a "5" on it.
EASY WAY FOR ACHIEVEMENT
The easy way to get this achievement is on a sword match. Make sure you have sticky grenades, and have somebody follow you. Usually someone chasing you runs in a straight line towards you. Once they are lined up simply throw your grenade straight at him.