Here is the full list of all 19 Rencounter achievements.
Learned talent "Child of Chaos".
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.
???
Complete the game in "Permanent death" difficulty.
Reach the tenth level.
Tame animal.