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