xK1

xK1

211
15
20 Jul 10
3h 33m
23%
xK1

Zero Mortality achievement in Alien Swarm

Zero Mortality

Complete a mission on Normal difficulty or harder without any marines dying.

Zero Mortality0
20 July 2010Online Mode - These achievements require a connection to live services for playing an online game mode, for sharing content, accessing leaderboards, or validating data with a server.Cooperative - These achievements can be obtained by two or more players in a cooperative game mode who have met the achievement requirements.Difficulty Specific - These achievements require that the game be played on a certain difficulty level.Time/Date - These achievements require you to play the game or perform actions at certain times, within a time limit, or on specific dates.
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