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