Here is the full list of all 21 Catan Universe achievements.
Finish the introductory game of 'The Duel'.
Reach level 5.
Add your first friend.
Build a road that is compromised of at least 12 sections (including ships).
Reach level 2.
Change your looks with the avatar editor.
Reach level 10.
Reach level 20.
Reach karma level 4.
Win a game, where you have both the Longest Road as well as the Largest Army.
Use your first ticket.
Create a guild or join one.
Win 5 games with the Seafarers expansion.
Uncover 10 fog tiles in a game of Seafarer.
Move the pirate 5 times in a game of Seafarer.
Win 5 games with the Cities&Knights expansion.
Build 3 city walls in a game of Cities&Knights.
Play the progress card 'Wedding' 10 times in your games.
Win a game without building a city.
Finish the tutorial of the base game.
Colonize all islands in the Seafarer scenario "The four islands".