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