The hardest games to discuss are probably those that are good but not great. I recently finished Enslaved: Odyssey to the West, and yeah, it was okay.
It's tempting to stop there, but 'meh' is a very inadequate reaction to a game with so much good in it. My lukewarm core reaction is honest but misleading.
There are definite high points to Enslaved, starting with the power dynamics between Trip and Monkey. Control swaps back and forth at various points, complicating the master-slave relationship. How happy they are in those roles also varies. Although Trip's vulnerability is over-emphasised at times, I still found it a relatively well-handled, deliciously ill-defined relationship.