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