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