Here is the full list of all 50 Armello achievements.
In a game, go from being Corrupt to having 0 Rot.
Reach 13 Rot or more in a single game.
Win a game with a Rot Victory.
Breach the Palace before the 5th Dawn.
Play Lightning Strike to a Hero standing on a Palace Tile.
Win a game with Sana of the Bear Clan.
Kill the King in Battle, without taking any Wounds.
In one turn, Kill a Hero with whom you currently have an Allies' Pact and take one of their Settlements.
Have the Spy Glass and Sailor's Lantern Equipped at the same time.
Be tempted beyond restraint in a Forest.
Defeat four or more Kings Guard's in a single game.
Steal the King's Crown in Battle with the Mirror Cape.
Be saved by a very helpful fellow, just when you need him most.
Win a game with a Spirit Stone Victory.
Play Reprieve on yourself the same turn you receive a Bounty.
Be tricked and trapped by some troublesome lil' fellows.
Win a game with River of the Wolf Clan.
Win a game with a Kingslayer Victory.
As the Prestige Leader, attack the King.
Win a game with Thane of the Wolf Clan.
Win a game with a Prestige Victory on the 9th Day or later.
In a single game, receive more than ten Gold from Exploring Dungeons.
Be presented with a mystical choice.
Win a game of Armello without killing another Hero.
Win a game with Zosha of the Rat Clan.
Win a game with a Prestige Victory
Win a game of Armello without dying.
Kill another Hero in Battle with nothing Equipped and no Followers.
Complete Armello's Prologue.
Win a game with Brun of the Bear Clan.
Win a game with Barnaby of the Rabbit Clan.
Kill the same Hero 5 times in a single game.
Win a game with Amber of the Rabbit Clan.
Win a game with Mercurio of the Rat Clan.
Pierce through 3 Shields with Thane's Hero Power.
Defeat a Corrupted Hero with Sana's Hero Power.
As Amber, have 3 Equipped Treasures and 3 Recruited Followers.
Steal another Hero's last Gold using Mercurio's Hero power.
Annihilate another Hero with Brun's Hero power active.
Make 3 Kills in one Turn using River's Hero power.
As Barnaby, have three Items Equipped and have a full Hand of Item Cards.
Finish a game with Zosha having never been revealed at Night.
Have your Items grant you six or more Shields in Battle.
Kill 3 King's Guards with a Royal Pardon Equipped.
Find and Equip three Treasures from Dungeons.
Heal a Bane.
In a single game, find two Portals by Exploring Dungeons.
Overcome ten Perils in a single game.
Regain a Recruited Follower to your Party whom you had already lost that game.
Become King or Queen of Armello 50 times.