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