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