Complete the following achievements to unlock Microsoft Gamerscore points.
| Achievement | How to unlock
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| 10.0 From the Judges (20 points) | Do a triple jump.
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| 5 Shots, 5 Kills (20 points) | Do 5 consecutive headshots without reloading or taking damage.
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| Charted (20 points) | Unlock the entire game map.
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| Complexity Theory (10 points) | Level up to experience level 10.
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| Fort Knox (20 points) | Collect all the gold bars.
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| From Alpha to Omega (10 points) | Complete the Omega Armor.
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| Gets Better With Age (50 points) | Complete the game with 8 Health Packs, 19 Grenade Packs, 20 Foam Packs and 9 Missile Packs.
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| Hee-ya! (20 points) | Knock back enemies 1000 meters total with melee attacks.
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| Hook, Line and Sinker (20 points) | Kill an enemy with the Hookshot.
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| Itsy Bitsy Spider (10 points) | Defeat a Spidertank by drowning it.
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| Let There Be Light (10 points) | Turn on your flashlight.
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| Mutually Deterrent (20 points) | Collect all the missile packs.
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| Old Dog, New Tricks (10 points) | Perform each type of melee attack: Dropkick, Hanging Takedown, Drop-down Takedown, Double Takedown.
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| Roller Coaster (10 points) | Take 20 rides on the mine cart.
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| Run, Forest! (30 points) | Run 10 kilometers total in hyperspeed.
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| Spam in a Can (20 points) | Defeat an XOS-1 Soldier with the Inertial Element.
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| Speedy Delivery (30 points) | Complete the final fight in less than 1 minute 30 seconds..
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| Surface Tension (20 points) | Collect all the foam canisters.
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| The Bigger They Are (20 points) | Defeat a Devastator with a foam grenade.
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| The Whole 9 Yards (20 points) | Kill 200 soldiers with a gun emplacement.
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| This Side To Enemy (20 points) | Collect all the grenade packs.
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| Unrestricted Access (20 points) | Collect all passkeys.
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