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