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