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