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