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