Just started the second level. I think what really sold this series to me is that I don't think there's any other game that makes replaying levels this much fun. There's something seriously rewarding when you get to know the level like the back of your hand and you move through it smoothly.
I'm trying to play this as if it was an episodic release. Not going from story mission to story mission. Didn't go to sapienza until I had like every opportunity and challenge done. Had to do Lights Out twice though. For some reason it didn't trigger the first time I did it.
Also on that note it's a crime that the game has opportunities set to full by default. Like I understand why it is but maaan.
Doing SOSA on Hokkaido in a Ninja outfit with no items was the highlight of the game for me.