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