Lean and Mean achievement in Aliens: CM

Lean and Mean

Earn Rank 20 as a Marine

Lean and Mean0
Online/Offline - These achievements can be obtained in either an online or offline game mode.Single Player - These achievements can be obtained by a single player.Cooperative - These achievements can be obtained by two or more players in a cooperative game mode who have met the achievement requirements.Versus - These achievements can be obtained by two or more players in a face off gamemode who have met the achievement requirements.Level - These achievements must be obtained by levelling up in-game components.

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