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