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ACHIEVEMENTS (3)
Five Times the Fun

Five Times the Fun

Kill 5 zombies at the same time.
17.2%
Don't Need No Stinkin' Bullets

Don't Need No Stinkin' Bullets

Use only the Crowbar and Gravity Gun.
14.8%
From the Book of Marc

From the Book of Marc

Find the Epistle 3 letter.
11.2%
HIDDEN ACHIEVEMENTS
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3 hidden achievements

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