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