Alien Swarm Achievements

Full list of all 66 Alien Swarm achievements.

  • Clear Firing

    Kill 25 drones without friendly fire. Four marines must be present in the mission.

  • Short Controlled Bursts

    Complete a mission with no friendly fire incidents. Four marines must be present in the mission.

  • Shield Down

    Deliver the finishing blow to a Swarm Shieldbug.

  • Blast Radius

    Kill 6 Swarm with a single Grenade.

  • Sharpshooter

    Complete a mission with better than 90% accuracy.

  • Perfect

    Complete a mission on Normal difficulty or harder without receiving any damage.

  • Scrambled Eggs

    Destroy all Swarm Eggs in a mission without allowing any to hatch.

  • Bug Stomper

    Kill 100 Swarm Grubs.

  • Parasite Puncher

    Kill a Swarm Parasite with a melee attack.

  • Close Encounters

    Kill 20 Swarm with melee attacks in a single mission.