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