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