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