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