Here is the full list of all 29 URBO achievements.
Build a town in each URBO surroundings
Make 20 x3 combos
Unlock all sets of buildings
Make 10 x3 combos
First 4x combo of merges
Reach 100 000 population in all surroundings in total
Discover all islands at any multi-island surroundings
Build 20 buildings of level 8 in all surroundings in total
First activation of the tower
Unlock ARCHIPELAGO
Unlock all surroundings
Reach 50 000 population in all surroundings in total
Build 10 buildings of level 8 in all surroundings in total
First ship voyage
First entry to photomode
First merge of 9 buildings
Build 5 buildings of level 8 in all surroundings in total
Make 5 x3 combos
First 8 level building
Unlock VALLEY
Reach 20 000 population in all surroundings in total
Unlock WATERFALL
Get 21 sets of cards in total
First island completed
Reach 5 000 population in all surroundings in total
First 7 level building
First 6 level building
First 5 level building
First building built