Here is the full list of all 80 Pandora: First Contact achievements.
As Vivian Gardinier, produce or refit a unit with the Deadlock Elusion Field device.
Promote 5 or more units with a single Field Training operation.
As Alpheus Schreiber, explore 4 ruins before turn 24.
Finish a multiplayer game.
Win an economic victory.
Win a multiplayer game.
Develop a city with more than 10 morale.
Develop a city to produce more than 100 food per turn.
Develop a city to produce more than 100 minerals per turn.
Develop a city with more than 100 production per turn.
Kill all native aliens on Pandora.
Enter the Transcendence Era.
Damage 3 or more units with a single operation.
Explore the whole planet.
Enter the Mechanization Era.
Reassign city territory acquisition.
Use the planetary market.
Attain maximum rank with a unit.
Eliminate a faction from Pandora.
Deploy an operation.
Declare war on another faction.
Forge an alliance with another faction.
Build a second city.
Add a device to a unit design.
Explore an observatory.
Have unrest in a city.
Native aliens turn aggressive.
Complete a project.
Execute a flank attack.
Build a Fort on a choke point.
Refit a unit.
Reassign population tasks.
Accumulate 1.000.000 credits across any number of playthroughs.
Use a Spitter unit against a Hive.
Capture 100 enemy cities.
Change ground elevation.
Clear 100 hives.
Convert a native alien to your side.
Convert an Aspidoch to your side.
Convert a Leviathan to your side.
Destroy an enemy city.
As Eric Preston, forge an alliance with James Heid.
Explore 100 ruins.
Start a game on random alien aggression, difficulty, world size and shape.
As James Heid, clear a hive before native aliens turn aggressive.
Kill an Aspidoch.
Kill a Leviathan.
As Lilith Vermillion, produce 5 troopers before turn 18.
Build or refit an aircraft with the Sonic Environment Evaluation device.
Build or refit an artillery tank with the Assault Tactics Tweaker device and no armor.
Build a black hole generator.
Build a Titan Mech.
Build a nuclear launch center.
Build or refit a trooper with the Healing and Universal Maintenance device.
Purchase 200 production items.
Develop a city with more than 100 research per turn.
Sink a Transport with a Bombardment operation.
Start a multiplayer game with the drop-in option enabled.
Achieve every victory type.
Win a game on hard difficulty or higher.
Win a game on very hard difficulty and very high alien aggression.
Win a game on a large size world or larger.
Win a game on medium difficulty or higher.
Win a military victory.
Win a research victory.
Win a game on a small size world or smaller.
Win a game on a medium size world.
Win a game on very hard difficulty.
Win a game on very high alien aggression.
Win a game with Terra Salvum.
Win a game with Noxium Corporation.
Win a game with every faction.
Win a game with Divine Ascension.
Win a game with Solar Dynasty.
Win a game with Imperium.
Win without losing any units to aliens on medium alien aggression or higher.
Win without losing any units to aliens on very high alien aggression.
Win a game with Togra University.
As Yun Xi, produce a Replicant Factory building.
Win a game on high alien aggression or higher.