The title, developed by Ready At Dawn studios (Daxter, PSP) is a prequel to the original God of War (PS2), with Kratos having been saved by Ares at the start of the game.
Both visually, and controls-wise, it sounds as though Ready At Dawn certainly have the PSP's capabilities well in hand:
"While Ready at Dawn's first title, Daxter, was a visual accomplishment for its time, God of War: Chains of Olympus is quite simply the best looking title on the system, bar none."
"Aside from its rather stunning visuals, the first thing you'll immediately notice about Chains of Olympus is that Ready at Dawn has done a stellar job of keeping Kratos' move set intact..."
"...though the PSP is missing the L2 and R2 buttons and the right analog stick of the Dual Shock 2, I dare say that the control scheme here works better than on the PS2. Instead of having to use the D-Pad to change between magic types, you now hold R and press a corresponding face button."
Combat and action too seemed to have been nailed:
"While Ready at Dawn didn't stray from the formula, it has done a fantastic job of keeping the intensity the series is known for cranked up to 10 the whole way through"
Sounds like lightning has struck twice now for breakout developer Ready at Dawn. Looks like the first must-buy game for the PSP in a loooong time!
God of War: Chains of Olympus Review (IGN)