Complete the following achievements to unlock Xbox Live Gamerscore points.
| Achievement | How to unlock
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|---|
| Ashes to Ashes (10 points) | In Castle DLC Matchmaking, disintegrate 6 enemies using Forerunner weapons.
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| Beating up the Beat (30 points) | In Castle DLC Matchmaking, perform 5 melee kills in a single match.
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| Dodge This! (20 points) | In Castle DLC Matchmaking, get two direct Spartan Laser kills in one match.
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| Hello Nurse! (30 points) | In Castle DLC Matchmaking, heal a near-death teammate with Regen Field 5 times.
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| Outta My Way! (40 points) | In Castle DLC Matchmaking, kill 5 enemies during a match by running them over.
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| Scrapyard (30 points) | In Castle DLC Matchmaking, destroy 2 vehicles during a single game.
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| Sight Seeing (20 points) | In Castle DLC Matchmaking, complete a match in any mode for each Castle map
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| That Won't Save You (30 points) | In Castle DLC Matchmaking, assassinate an enemy who is using a Hardlight Shield.
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| What is Yours is Also Mine (40 points) | In Castle DLC Matchmaking, disable a vehicle and then hijack it.
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