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