Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Earth Episode Completed	All levels completed in Episode 1.
Edonia Episode Completed	All levels completed in Episode 4.
Krisan Episode Completed	All levels completed in Episode 6.
Moon Episode Completed	All levels completed in Episode 2.
Sandfort Episode Completed	All levels completed in Episode 3.
Stormgard Episode Completed	All levels completed in Episode 5.