Full list of all 36 Tails of Iron achievements.
The base game contains 27 achievements, and there are 2 DLC packs containing 9 achievements.
Collect all Weapons and Armors
Collect all other Medals
Complete all quests on the Arena Board
Defeat Rattus Augustail in the deeps of the Forbidden Crypts
Return all Statues to their resting place
Complete all quests on the Ranger Faction Board at the Rangers' Lodge
Collect all Ingredients in the Chefs Book
Meet the strange new creatures underground
Return power to the bottom of the mines
Repair the Throne Room
Defeat the Mozi Queen
Defeat Ratnor Rodentson in the deeps of the Forbidden Crypts
Complete all quests on the Elder Board in Longtail Village
Repair the Smithy
Collect 20 Gold
Fix the Travellers Wagon to allow him to continue on his journey
Repair the Kitchen
Collect 20 Iron Ore
Defeat 25 Mozis in Battle
Rescue Redgi's brothers from the Frog clans
Receive the first two handed weapon
Defeat 25 Grubs in Battle
Collect 50 Monster Parts
Receive the first ranged weapon
Defeat 25 Frogs in Battle
Become King of the Rat Kingdoms
Complete all quests on the Guard Faction Board in the Rat Fort