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