Check out the following videos if you want to see how each of the Challenges are completed.
'Bare Hands' Challenge
Grab the grunts and use them as a battering ram. Try to knock the Cyclops of the ledge as it saves alot of time.
'Population Control' Challenge
Dont allow more than 50 enemies at the same time and keep pressing L1 + Square on enemies and grabbing them to use as a battering ram.
'El Matador - Ole' Challenge
Try not to get gored by the Minotaurs and don't get piled on by the enemies. Best way to do this is use the Square, Square, Triangle combo twice at the start to take out the first Minotaur and then use L1 + Square on the other enemies. At the stages where there are 2 and 3 Minotaurs go to the ledge and roll so you hang off (keep pressing X while moving left to right so you dont fall or climb up) and let the Minotaurs charge at you so they fall off and take other enemies.
Score 1,000 points by knocking enemies out of the arena. Simply beat up the big enemy at the start and climb onto him when the enemies spawn and keep hitting them using Square. Try to get the Minotaurs and Wraiths as much as possible as they are worth the most points.
'Hades' Kids' Challenge
Get 5 Cyclops to spawn. Best way to do this is to keep using the Square, Square, Trrangle combo and dodge their attacks by rolling. Finish them off when they have a Circle over their head.
'Simply Smashing' Challenge
Destroy the urns before the times runs out. This can be easily done by using Square to destroy while moving around quickly. Use roll when needed.
'Get Stoned' Challenge
As this is the hardest Challenge it is recommended that you try to get this one last. Allow the Gorgons to turn you into stone 10 times without dying, the easiest way to do this is to press Circle at a Gorgon at every opportunity so it gazes at you and then press L1 to reflect and press the wrong button so you turn into stone. Quickly break free by moving Left and Right rapdily and keep repeating this process and although you wil die several times you will eventually get the Gold trophy.
Added by: Sanzano Sep 27th 2010, ID#3095