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