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