Gameplay

Skeet Shooter

From Halopedia, the Halo wiki

Skeet Shooter is an achievement in Halo: The Master Chief Collection. It is unlocked by killing 15 enemies while they are airborne from a Man Cannon on Halo 2: Anniversary multiplayer. The achievement is worth 10 Gamerscore and can be unlocked in both matchmaking and custom games. It also unlocks the "Shotgun Shells" Multiplayer Emblem.