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