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