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