Portal 2
Steam
- 5,202,985 Achievements Earned
- 276,226 Players Tracked
- 51 Total Achievements
- 8,933 Obtainable EXP
- 12,889 100% Club
After completing co-op, complete Calibration Course online with a friend who hasn’t played before
14.18%
Very Rare - 265.00 EXP
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