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Both Barrels is a multiplayer achievement in Halo: Reach added with the Noble map pack on Tuesday, November 30, 2010. It is obtained when the player earns a Double Kill with the shotgun in Multiplayer Matchmaking.
- A good method for earning this achievement is to play Living Dead since you start with the shotgun and zombies don't have shields.
- This may possibly be a reference to the Halo 3: ODST achievement "Both Tubes".