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