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