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