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Headcrab Frenzy!
Steam
Achievements
Leaderboard
Prices
Forum
8,579
Achievements Earned
1,016
Players Tracked
30
Total Achievements
5,707
Obtainable EXP
120
100% Club
Antidote
Exterminate 3500 poison headcrabs.
12.30%
Very Rare - 319.00 EXP
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