Here is the full list of all 28 Space Overlords achievements.
Destroy 3000 buildings.
Destroy 30000 buildings.
Destroy 50000 buildings.
Destroy 100000 buildings.
Destroy 250000 buildings.
Conquer your first planet.
Play and win a multiplayer game session with each of the playable races.
Destroy 1000 Base buildings.
Destroy 1000 Mega Cities
Destroy 1000 Comm Stations.
Destroy 1000 Power Stations.
Create a custom planet in the level editor.
Create planets with all the gameplay types in the level editor.
Create 8 custom planets in the level editor.
Complete Chapter 1 in Story Mode
Complete Chapter 2 in Story Mode
Complete Chapter 3 in Story Mode
Complete Chapter 4 in Story Mode
Complete Chapter 5 in Story Mode
Complete Chapter 6 in Story Mode
Complete Chapter 7 in Story Mode
Complete Story Mode with all the Overlords.
Unlock All the Achievements
Find all 4 pieces of ultimate armor and unlock your true potential.
Find and destroy an obelisc containing a piece of the ultimate armor for any overlord.
Unlock the ultimate overlord form with the 4 main characters of the game.
Defeat 100 competing overlords on local or online multiplayer matches.
Defeat 500 competing overlords on local or online multiplayer.