Size Is Everything
Size Is Everything is a Halo 4 achievement added with the Crimson Map Pack. It is awarded when the player kills 20 enemy players with a detached machine gun turret. Only kills scored on a Crimson map count toward the Size is Everything achievement. Shatter is the only Crimson map which features machine gun turrets.
The player can improve their chances of getting kills with a detached turret by enabling the Gunner support upgrade. Gunner improves player mobility while carrying a detached turret. The Gunner upgrade is unlocked by completing the Pathfinder specialization.