Here is the full list of all 9 Children of a Dead Earth achievements.
Beat the game with Silver on all levels.
Beat the game.
Defeated an entire gas giant system with a single ship.
Unlocked Module Design through combat.
Unlocked Ship Design through combat.
Used a precision strike to disarm an enemy craft.
Emerged victorious from at least one combat.
Completed at least one level.
Beat the game with Gold on all levels.