12 achievements for 1000 Gamerscore
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Clear Victory
Complete any mission with 3 stars
50 Gamerscore
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Death from the Skies
Kill any zombie with a blue barrel
50 Gamerscore
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First Upgrade
Upgrade any unit
50 Gamerscore
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Experienced Survivor
Kill 100 zombies
50 Gamerscore
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Bill to the Rescue
Kill any zombie with a machine gun
50 Gamerscore
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First Pack
Open a military pack
50 Gamerscore
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Trade Finished
Buy any item from the merchant
100 Gamerscore
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Molotov as Intended
Kill Undead with a Molotov cocktail
100 Gamerscore
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Collector
Find 20 items
100 Gamerscore
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No Exit
Meet the Robber
100 Gamerscore
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Frozen Meat
Use nitrogen to freeze at least three zombies
100 Gamerscore
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Fan
Reach rank 12
200 Gamerscore