Here is the full list of all 19 Rencounter achievements.
Lose 6 or more characters in one game.
Heal your first enemy.
Fight marked.
Leave the tower.
Complete the game with three characters.
Reach the fifth level.
Get all possible recipes.
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Complete the game in "Permanent death" difficulty.
Reach the tenth level.
Tame animal.
Learned talent "Child of Chaos".