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