I'm probably close to 2/3rds of the way through. It never gets dull. The environments and animations don't stop being amazing. Not often I say that a videogame is beautiful but this one is. A work of art. Absolutely every single aspect is better than the first game. In some areas its not even close. If it finishes strong, it's making a case to be one of my top 3 single player games of this generation.