Briefing
Achievements
Every in-game achievement and what you need to do to unlock it.
Meta achievements (long-term)
Rank 2 unlocks at 5,000 kills as the team leader. Rank 3 unlocks at an additional 20,000 kills (25,000 cumulative). Higher ranks double the leader perk value and add new powerups.
Run milestones
Survive X minutes, defeat Y bosses, fully evolve a specific weapon, complete a map without taking damage. These are tracked in the Steam Achievements interface.
1.0 additions
1.0 added new Achievements tied to Bio Lab clears, Boss Rush milestones, Rank 5 Survivor Skill Trees and the Missions / Camp loops.
Fan-Made Community Wiki