Only beat the singleplayer, not the multiplayer. There really isn't much to say about such a well-known oft-discussed beloved game like this that hasn't been said a million times already, but i'll go ahead and make a few points that are already overdone anyway. This game's characters have so much personality, much more than its predecessor in which Glados was already an extremely funny and well-done character. In this one she has a whole arc, and we also have more fantastic characters however important (Wheatley) or tertiary (Cave Johnson (I think he was called)) they were to the story, they all felt extremely well written. Also total sidenote, as a big fan of British comedy it's still weird to hear Stephen Merchant trying to be evil, but he's great in this. The puzzles are great stuff too, a lot of very creative additions to how the test chambers worked, loved all the gel stuff as it was both creatively challenging and extremely fun to fuck about with. It's just a really great game, as you'd expect. Portal 3 when