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