I just finished it tonight, actually. The ending was indeed amazing, it blew me away. That being said, if you didn't like the demo, I'm not sure if you'll like the rest of the game (I haven't played the demo though). The game is pretty consistent throughout, you're pretty much doing the same thing for the whole game, which is stumbling around the world looking for puzzles to solve. But the world is so pretty and interesting that the exploring is pretty cool. There are some cryptic puzzles thrown in, though (not required to finish the game), but they're so obtuse they're not fun to solve if you ask me. Overall, I really liked the game though.