Here is the full list of all 50 Star Trek: Infinite achievements.
Win a game as the Cardassian Union.
Win a game as the Klingon Empire.
Win a game as the Romulan Star Empire.
Research 20 anomalies.
Have 50 Slave Pops. (Cardassian)
Send 20 gifts.
Defeat the Borg as the Cardassian Union.
Defeat the Borg as the Romulan Star Empire.
Complete the Cardassian Tradition Tree.
Complete the Romulan Tradition Tree.
Abolish Slavery via the Mission Tree. (Cardassian)
Accept Kahless. (Klingon)
Choose the less-xenophobic path on the Mission Tree. (Romulan)
Reunite with the Vulcans. (Romulan)
Control 5 Puppet States as the Romulan Star Empire.
Assimilate a Puppet State as the Romulan Star Empire.
Evacuate Romulus before the Supernova. (Romulan)
Liberate a minor power.
Integrate Bajor. (Cardassian)
Win a war with the Glory to the Empire war goal. (Klingon)
Reject Kahless. (Klingon)
Engage in a war with all 4 Major Powers simultaneously.
Contact all types of Support Powers.
Free a system by sabotaging a starbase.
Complete the Klingon Tradition Tree.
Overthrow a minor power by staging a coup. (Klingon)
Defeat the Borg as the Klingon Empire.
Hire 10 Nausicaan Leaders.
Reach 100% Global Tension.
Have a Gaia-class planet that is home to at least 50 Pops.
Fully upgrade the Enterprise. (Federation)
Complete all Mission Tree Nodes for the T.N.G. crew. (Federation)
Defeat the Borg as the Federation.
Choose the Warfare path on the Mission Tree. (Federation)
Win a game using Civics.
Help evacuate Romulus. (Federation)
Complete 25 Spy Missions.
Win a game as the Federation.
Win a game via Points.
Obtain more than 50% of the Balance of Power.
Complete the Federation Tradition Tree.
Have 20 colonies at the same time.
Build a starship of the largest possible class.
Build the highest tier of capital building.
Build a Mining or Research Station inside a Hazard.
Upgrade a starbase to the highest level.
Research 100 Technologies.
Recruit Hugh.
Reach 95% Empire Stability.
Unlock the U.S.S. Enterprise. (Federation)