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