I found only 3 places in the game where i found challenging. I followed the guid on here there were several times where there were more effective ways of killing the creatures they popped out. The one sugestion that was made using the gorgon head during the ceberus battle worked amazingly you just gotta make sure your looking at the jackal looking thing.
the three parts i had difficulty with was the SEA HORSE... to me possibly the hardest boss, then i would say the ceberus boss near the end of the game, then the inside the aMAZEd part where you actually have to time it out and jump on the harpies.
i thought the walkthrough was funny as hell. i was going thru it and was laughing non stop. this game i expected to be way more challenging altogether disappointed with the difficulty.
PS3 gamerID: slickjd_2002