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