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.
Mark & Julia
A new dawn
Tanya kidnaps Luke
Julia the fortune-teller
Richard's menace
Tanya had a soul too
You escape to Mars
Luke and Tina prisoners
Luke marries Tanya
Bionic... hearts
Tanya is a serial killer
Luke is killed by Julia
Luke's sacrifice
Luke the great scientist
Luke ends his life in jail
Luke becomes a robot
Jealous Tanya kills Helen
Tanya kills Luke
Tanya loves Luke
Not an illusion
Happy Ending aka master fanservice ending!
Tanya is arrested by police
Luke tries to shoot Tanya
Luke never meets Tanya