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