Here is the full list of all 26 Cardinal Cross achievements.
Try to rip off Egon.
Leave the True Xeronians to their fate.
Persuade the Aegis soldiers to let you go.
Don't give up the Artifact.
Start a romance with Egon.
Valery didn't survive.
Let Kamali live.
Flirt with every possible love interest in the same playthrough.
Start a romance with Karel.