Similar to the previous titles, to unlock the challenges of olympus in God of War 3 for PS3 you must simply beat the game on any difficulty.
About DoubleDizle
Gamer, Software Engineer, Web Developer, Professional Geek
You also might be interested in
You can triple the combo meter during bonus play in[...]
In order to max out your health, magic, and item[...]
To unlock the Combat Arena in God of War 3[...]