Here is the full list of all 21 Lambda Wars Beta achievements.
Complete the mission for Waste.
Defeat 100 enemies in Annihilation games.
Win 100 Destroy HQ matches.
Win 20 Destroy HQ matches.
Defeat 20 enemies in Annihilation games.
Complete the mission for Valley.
Blow up 100 enemy buildings with Saboteurs in Destroy HQ or Annihilation mode.
Reprogram a Floor Turret with a Saboteur and kill an enemy unit with it.
Kill 5 different units with one combine ball.
Kill Dog.
Build 20 Dogs.
Collect 50 Partisans together in Annihilation or Destroy HQ mode.
Kill 300 units with Suppression Device in Annihilation or Destroy HQ game mode.
Make your 50 very own zombies!
Build 20 Striders.
Win a Combine vs Rebels game in a 4v4 match of Annihilation or Destroy HQ.
Complete the mission for Abandoned.
Complete the mission for Radio Tower.
Win an Annihilation game.
As Rebels, kill 10 units with one grenade.
Complete the Tutorial level.