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