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