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.
Tanya is arrested by police
Jealous Tanya kills Helen
Tanya kills Luke
Luke becomes a robot
Luke the great scientist
Luke's sacrifice
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
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 ends his life in jail
Luke tries to shoot Tanya
You escape to Mars
Luke never meets Tanya