Here is the full list of all 24 Bionic Heart achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Julia the fortune-teller
Richard's menace
Luke is killed by Julia
Tanya is a serial killer
Bionic... hearts
Luke marries Tanya
Tanya kidnaps Luke
You escape to Mars
Tanya had a soul too
A new dawn
Luke and Tina prisoners
Mark & Julia
Luke ends his life in jail
Luke the great scientist
Luke's sacrifice
Luke becomes a robot
Not an illusion
Tanya loves Luke
Happy Ending aka master fanservice ending!
Jealous Tanya kills Helen
Tanya kills Luke
Tanya is arrested by police
Luke tries to shoot Tanya
Luke never meets Tanya