No missable achievements (plus 21 unknown)
Sign in with Steam or Xbox to track your progress, and:
Win an Annihilation game.
Complete the Tutorial level.
As Rebels, kill 10 units with one grenade.
Build 20 Striders.
Complete the mission for Abandoned.
Make your 50 very own zombies!
Kill 5 different units with one combine ball.
Complete the mission for Radio Tower.
Win a Combine vs Rebels game in a 4v4 match of Annihilation or Destroy HQ.
Complete the mission for Valley.
Complete the mission for Waste.
Build 20 Dogs.
Kill 300 units with Suppression Device in Annihilation or Destroy HQ game mode.
Defeat 20 enemies in Annihilation games.
Reprogram a Floor Turret with a Saboteur and kill an enemy unit with it.
Collect 50 Partisans together in Annihilation or Destroy HQ mode.
Win 20 Destroy HQ matches.
Defeat 100 enemies in Annihilation games.
Win 100 Destroy HQ matches.
Blow up 100 enemy buildings with Saboteurs in Destroy HQ or Annihilation mode.