Grenade Stick

The Stick It (or Grenade Stick in Halo 3) Medal is awarded for killing an opponent by sticking a Plasma or Spike Grenade to them. It is available in all Multiplayer gametypes and has a Bungie difficulty rating of 3 (out of 10). It is represented by a bronze star with a blue star in it and a blue sphere inside of that. After you kill an opponent by sticking a grenade to them, a message appears on your screen that says: "You stuck (player)". This is a medal in the Halo 3 campaign. you have to have good presision to earn this.