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.
Maybe...
You are starting to get sick of this hospital
Save ?? and question ??
Celebrate the end!
Do you believe in them?
Be smarter than a cheater
Better aim a good conduct
Show that you know how to handle a woman
...but not in control
Can be how a story ends
You are no ladiesman, are you?
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
Meet someone known on the other side of the world
Don't forget your toothbrush
Nothing else to lose
Officially an outlaw
This suicide is not from the squad
Proof of your investigative abilities
Now you do know a bit more about the game's secrets
Solve a problem using violence
Cut your hand and make the pact