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