Clocked in at 3.5 hours after beating it. Figured I had most of the collectibles, turns out after looking at the achievements I had around half (only missed one of the tapes, but somehow missed some god faces, and TONS of stones, but those are lame anyway). There was some definite stuff that was frustrating (oh was a rock barely moving just a bit and you casually stroll into it? DEAD) for the most part 90% of it was totally fun. When something went wrong it was part of the fun as I then had to figure some other way out. Quick saving would still be welcome though.
Game looked great. Had a good sense of humor (although not why you're coming to this). Controller support was solid.
Whole game was pretty good I'd say. A good ten dollars and night spent.