Here is the full list of all 24 Unknown Fate achievements.
Complete the adventure.
Kill all enemies.
Stop!
You found the last piece!
Find all memories.
Memories are all important.
Kill the boss without dying.
Goodbye colleague.
All-purpose solution.
You have the full power of the artefact now.
That saved me.
Some Unfortunate Events!
Alwasy good to know when to stop.
Weird things in the park.
Together is better.
Did you see it?
I'll take care of it.
When we met again.
I'm glad I found you.
Sometimes you need some help.
Me, the hands and the Wardrobe.
I'm not having fun.
Sometimes you are not alone.
When we first met.