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