Here is the full list of all 24 Soul Gambler achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Celebrate the end!
Maybe...
...but not in control
Do you believe in them?
Be smarter than a cheater
You are starting to get sick of this hospital
Save ?? and question ??
Better aim a good conduct
Proof of your investigative abilities
You are no ladiesman, are you?
Now you do know a bit more about the game's secrets
Solve a problem using violence
Sometimes is what remains in the end
Officially an outlaw
This suicide is not from the squad
Show that you know how to handle a woman
It's impossible to escape from your fate
Can be how a story ends
Meet someone known on the other side of the world
Don't forget your toothbrush
Nothing else to lose
Finish your work on time
Cut your hand and make the pact
Never give money to a stranger