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