News flash: Portal 2 is astounding, just like everyone knew it would be.
The writing and voice acting are just perfect, which is especially impressive considering that at no point in the game do you ever actually meet another human being. Even in the best games there are usually times when you can tell that there are actors somewhere reading lines, but not so here. Toward the beginning of the game when the puzzles are easy enough that you solve them rather quickly, I'd hardly have enough time between lines of dialogue to stop grinning. My face was getting sore.
There were a couple parts in one particular section of the game where I spent more time than I'd have liked searching every pixel of the level for white patches to shoot, but besides a couple small missteps, it's about as close to perfect as a game gets, and in a class of its own.