Wow, no catch-all for this? I'm a bit shocked, because this is a fantastic game.
Chains of Olympus was one of the best PSP games I've played, and so far this one is topping it. Ready at Dawn has incorporated a number of changes from God of War 3 (QTE prompts appear on the screen sides corresponding to the button, boss/mini-boss names appear on screen) and has kept all the great improvements that were in Chains of Olympus (simply hold a button to open a chest instead of mashing it).
I've only played just a bit past Atlantis, but so far this is a blast. Has anybody else bought this and started it?