Here is the full list of all 14 Sword of the Stars II achievements.
Research all possible techs in a single game.
Lose your first Leviathan.
Reduce a planet to zero resources.
Build "Leviathan" human Leviathan
Research the xombie plague.
Build classic "Sword of the Stars" Human Dreadnought.
Terraform a planet to a hazard rating of zero.
Design a ship, save the design.
Successfully survey your first planet.
Build your first ship.
Colonize a world.
Build your first station.
Welcome back to Sword of the Stars II.
Successfully repelled with no damage taken by the planet.