Waaaay too easy!
There's just no way to die, you can not loose a fight in any way, and the bosses are dead in a few combos. The other PoP games took me a over 30 hrs of playtime to finish but this one i did in less then 1 day of play time, other thing I didn't like was that there was not difficulty setting, i mean if you are gonna make a game that easy at least put a difficulty setting that makes it harder, or at least put some setting that allows you to die and return to a checkpoint, not that I like being rolled back a lot but it takes the fun out of getting enraged and killing everything with absolute fury after dieing from something several times.
And also the ending, the ending made me feel like I played the whole game for nothing.