Here is the full list of all 21 Catan Universe achievements.
Reach level 20.
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.
Finish the introductory game of 'The Duel'.
Colonize all islands in the Seafarer scenario "The four islands".
Reach level 10.
Win a game without building a city.
Win a game, where you have both the Longest Road as well as the Largest Army.
Reach level 5.
Reach level 2.
Add your first friend.
Change your looks with the avatar editor.
Build a road that is compromised of at least 12 sections (including ships).
Finish the tutorial of the base game.
Reach karma level 4.