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