I agree hell snake, the demo did feel as though it was missing something, like I was playing wrong if you will. But hard is not a word I would use to describe it. It was challenging like any action game, figure out the controls and your own pacing and it's cake. The only reason the chimera was more difficult than the gryphon was because one of my guys actually got downed during the chimera fight. Plus, he took a hell of a lot longer. The gryphon was downed in less than 2 minutes.
I'm gonna toss around the idea of a preorder some more, but I doubt it honestly. I'm tired of games that basically have a 2 week shelf life and then go into cold storage or worse, a resell to lamestop. I hate it, but I need some form of multiplayer these days to warrant a purchase, or at least a promise of new content for the game. As much as I hate dlc, some cases are acceptable-ish.