Here is the full list of all 31 Legends Of Iona RPG achievements.
Find and Equip the yellow set
Find and Equip the final set
You finised the Ancient World
Earn Lv30
Hold 50k IoCoins
You finished the Domain of the Walkies
Find and Equip the red set
Find and Equip the green set
You finished the The Lakes
Find and Equip the orange set
You finished the Stockades
Earn Lv15
Meet the Mayor from the Stockades
You finished the Community of the Well
Find and Equip the blue set
Earn Lv5
Meet the Mayor from the Community of the Well
Fall in the well