1. Black Mesa Achievements
  2. Gray Matter Propulsion achievement
Black Mesa

Black Mesa

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4.41
Game action
Black Mesa
Hisohiro

Hisohiro

329
20
01 Dec 15
33h 20m
40%
Hisohiro

Gray Matter Propulsion achievement in Black Mesa

Gray Matter Propulsion

Headshot 20 enemies with the .357 magnum.

Gray Matter Propulsion0
11 January 2017
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