Here is the full list of all 50 Citizens of Space achievements.
Beat the game with all citizens recruited.
Defeat GalactiCo within the Corporate Dimension.
Complete all Extermination quests.
Complete all Hide-And-Seek quests.
Complete all Wanted Poster quests.
Stop the GalactiFactory before it totally recalls Earth.
Foil the president's convoluted plot against his own planet
Get all citizens to Talent Lv 3.
Corporate Espionage Action
Defeat 1,000 enemies.
Receive 10,000 damage in combat
Recover the pieces of Earth noted in the president's intel.
Recruit all 40 citizens.
Find 100 treasures.
Get one citizen to Lv 20.
Use 25 items.
Recruit 25 citizens.
Spend $10,000.
Receive 2,500 damage in combat.
Return Earth's core to its proper place.
Earn $10,000.
Find 45 treasures.
Defeat 250 enemies.
Get one citizen to Talent Lv 3.
Collect 300 items.
Spend $1,000.
Spend $3,000.
Rescue the Astronomer from her lunar bunker.
Earn $3,000.
Deal 10,000 damage in combat.
Receive 500 damage in combat.
Earn $1,000.
Defeat 50 enemies.
Deal 2,500 damage in combat.
Find 15 treasures.
Discover 30 locations.
Recruit 5 citizens.
Collect 100 items.
Discover 20 locations.
Leave the Galactic Federation of Planets to find the Earth!
Deal 500 damage in combat.
Collect 30 items.
Discover 10 locations.
Use 75 items.
Use 150 items.
Summon a citizen in battle 50 times.
Implement a policy in battle 20 times.
Swap Citizens in battle 100 times.
Complete 25 bounty missions for the Sheriff.
Collect 1,000 shiny bits.