Here is the full list of all 33 X3: Terran Conflict achievements.
Achieve trade rank Wholesaler.
Achieve fight rank Professional.
Mine ten units of Nividium.
Earn 100,000 Credits with a police license.
Build a complex with five factories.
Acquire your personal Headquarters.
Reactivate the final set of Hub gates.
Get one billion Credits in your account.
Destroy 20 ships with the Plasma Burst Generator.
Destroy a Solar Power Plant.
Train five marines to five stars.
Finish the Balance of Power mission.
Complete the New Home Missions.
Visit all sectors. Unfocused jumps don't count.
Complete the Aldrin Missions.
Destroy 1,000 Kha'ak and/or Xenon ships.
Complete Operation Final Fury.
Achieve the highest reputation with the main races.
Complete the Treasure Hunt Campaign.
Help the Goner to rebuild and relocate their Temple.
Reunite the Aldrin colony with Earth.
Claim ten ships.
Build a factory.
Force a pilot to eject a crate worth over 10,000 Credits.
Pass the Flight School.
Achieve trade rank X-TREME.
Achieve fight rank X-TREME.
Stun seven space flies at once.
Board and take over ten capital ships.
Board and take over a Xenon Q.
Finish three campaigns in Dead-is-Dead mode.
Finish six campaigns in Dead-is-Dead mode.
Finish nine campaigns in Dead-is-Dead mode.