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