Completed it just now. I give this a 6/10, including 1 extra point because the emotional ending made me feel slightly more sympathic towards it.
I was in to it at the start, willing to forgive the mushy camera but the more I played the more frustrated I got with the controls - meaning controlling the kid himself, sometimes in conjuntion with the camera - I had some truly abysmal moments with climbing Trico when near a wall and not knowing how to get the camera to stop spazzing out as I tried to crawl away from the wall side of Trico but never being able to because the camera would constantly be resetting my moment directions as it warped back in and out so I couldn't see anything but a fuzzy wall or Trico texture.
No game in 2016/7 should control this poorly considering how simplistic the actions were. The kids physics were ugly, all the flopping about - there were a few times when instead of going down a platform I just jumped off because I enjoyed seeing him limping about hurt from the fall - as if it was punishment for all the time I spent wrestling with his horrible moment and camera.
Directing Trico I had very little problem with, once or twice he went back down to a previous platform when I seemed to be taking too long for him to go up to the next one, but other than that he did exactly what I wanted a moment or two after I asked, sometimes without being asked and all I had to do was point the camera in the direction I wanted him to go when I was on his back.
The closer I got to the end, the more I wanted it to finish - by time I was inside the white tower I was over it. Like I said, having watched the ending I feel slightly more sentimental towards it, but the frustration levels before that were through the roof and I'm not one to rage against games, I just felt like my gripes with the game were needless - I had found no fault with the story, premise, ideas - it was the controls and gameplay that let it down for me.
I fail to see where the development time went, this feels like a very old fashioned experience and a short one at that. A PS2 game dressed up in PS3.5 graphics.