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