Here is the full list of all 16 The Lost and The Wicked achievements.
Defeat the Forgotten
Defeat the Punishment
Defeat the Despicable
Defeat the Weasel
Defeat the Hatred
Defeat the Dreadful
Defeat the Wicked
Enter the world of the wicked
Kill 100 Wicked
Kill 1000 Wicked
Upgrade damage 6 times
Upgrade money multiplier 6 times
Upgrade stamina 6 times
Upgrade health 6 times
Confront a traitor...
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