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