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