1. Alien Swarm Achievements
  2. Zero Mortality achievement
Alien Swarm

Alien Swarm

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Zero Mortality achievement in Alien Swarm

Zero Mortality

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

Zero Mortality0
Online 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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