Here is the full list of all 51 Salvation Prophecy achievements.
Utterly destroy the Free Nations faction.
Walk the path of the void to the alien homeworld.
Seek out the Rune of the Void.
Walk the path of the sun to the alien homeworld.
Destroy the alien mother ship.
Seek out the Rune of the Sun
Utterly destroy the Wyr faction.
Defend a colony against an alien attack.
Utterly destroy the Drone Unity faction.
Utterly destroy the Salvation faction.
Construct 5 new space stations as faction commander.
Construct 5 new battleships as faction commander.
Deliver the final damage which destroys a space station.
Destroy enough fighter ships to achieve a legendary reputation.
Seek out the Rune of Celestial Oblivion.
Travel to 10 different planets.
As faction commander, make peace with another faction.
Colonize 5 planets as faction commander.
Deliver the killing blow to a mech.
Complete missions to obtain military rank 8, faction commander.
Seek out the Rune of Summoning.
Destroy enough fighter ships to achieve a colossal reputation.
Destroy enough fighter ships to achieve an infamous reputation.
Complete a bounty mission against the pirate named Fisheye Grim.
Consume 100 stims across all your battles.
Complete missions to obtain military rank 7.
Deliver the final damage which destroys a battleship.
Destroy enough fighter ships to achieve a lethal reputation.
Complete a bounty mission against the pirate named Cranium Eterneon.
Complete a bounty mission against the pirate named Shred Necrotitis.
Complete missions to obtain military rank 6.
Seek out the Rune of the Continuum.
Successfully navigate through an unstable wormhole.
Destroy enough fighter ships to achieve a feared reputation.
Complete a bounty mission against the pirate named Kelmar the Twitch.
Complete a bounty mission against the pirate named Deadman Fallen.
Destroy enough fighter ships to achieve a dangerous reputation.
Complete a bounty mission against the pirate named The Reaver.
Complete missions to obtain military rank 5.
Destroy enough fighter ships to achieve a sturdy reputation.
Complete a bounty mission against the pirate named Malice Blackhand.
Complete a bounty mission against the pirate named Narcisus Humungous.
Complete missions to obtain military rank 4.
Destroy enough fighter ships to achieve a capable reputation.
Destroy enough fighter ships to achieve a recognized reputation.
Complete a bounty mission against the pirate named Shibby Wag.
Complete a bounty mission against the pirate named Little Jack.
Complete missions to obtain military rank 3.
Successfully navigate through a wormhole.
Successfully navigate through jump space.
Complete missions to obtain military rank 2.