21 achievements for 1000 Gamerscore
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I'm Not That Bad
Achieve Bronze in all challenges.
15 Gamerscore
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Carnage
Complete the story on "Easy" difficulty.
15 Gamerscore
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Zombie Nation
Complete 4th Millennium on story
15 Gamerscore
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Dino Crisis
Complete Mesozoic Era on story
15 Gamerscore
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Mr Robot
Complete 6th Millennium on story
15 Gamerscore
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Frozen
Complete 4th Century BC on story
15 Gamerscore
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Bored?
Played all modes
10 Gamerscore
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I'm Pretty Good
Achieve Silver in all challenges.
30 Gamerscore
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Bloody Carnage
Complete the story on "Normal" difficulty.
30 Gamerscore
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Slippery Devil
Take no damage for an entire level in the story mode.
30 Gamerscore
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Bring The Peace
Shoot 250,000 bullets.
30 Gamerscore
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Headmaster
Get 500 Headshots.
30 Gamerscore
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Mexican Wave
Survive 25 waves in Arcade
30 Gamerscore
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Dead No Longer Walking
Kill 1000 Zombies.
90 Gamerscore
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Boner
Kill 1000 Skelton Army.
90 Gamerscore
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Do Not Compute
Kill 1000 Robots.
90 Gamerscore
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Shoot Her
Kill 1000 Dinosaurs.
90 Gamerscore
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I'm the Dogs B
Achieve Gold in all challenges.
90 Gamerscore
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Extreme Carnage
Complete the story on "Hard" difficulty.
90 Gamerscore
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Greedy
Unlock all the weapons.
90 Gamerscore
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Perky
Unlock all the perks.
90 Gamerscore