Here is the full list of all 80 Pandora: First Contact achievements.
Reassign population tasks.
Complete a project.
Explore an observatory.
Convert a native alien to your side.
Refit a unit.
Add a device to a unit design.
Accumulate 1.000.000 credits across any number of playthroughs.
Native aliens turn aggressive.
As Alpheus Schreiber, explore 4 ruins before turn 24.
Use a Spitter unit against a Hive.
Build a Fort on a choke point.
Build a second city.
Capture 100 enemy cities.
Change ground elevation.
Have unrest in a city.
Clear 100 hives.
Kill all native aliens on Pandora.
Convert an Aspidoch to your side.
Convert a Leviathan to your side.
Declare war on another faction.
Deploy an operation.
Destroy an enemy city.
Eliminate a faction from Pandora.
Enter the Mechanization Era.
Enter the Transcendence Era.
As Eric Preston, forge an alliance with James Heid.
Explore 100 ruins.
Explore the whole planet.
Finish a multiplayer game.
Start a game on random alien aggression, difficulty, world size and shape.
Execute a flank attack.
Develop a city to produce more than 100 food per turn.
Forge an alliance with another faction.
Damage 3 or more units with a single operation.
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.
Develop a city to produce more than 100 minerals per turn.
Develop a city with more than 10 morale.
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.
Develop a city with more than 100 production per turn.
Promote 5 or more units with a single Field Training operation.
Purchase 200 production items.
Attain maximum rank with a unit.
Reassign city territory acquisition.
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.
Use the planetary market.
As Vivian Gardinier, produce or refit a unit with the Deadlock Elusion Field device.
Win an economic victory.
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 multiplayer game.
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.