Whoa, that's pretty banging! I'm going to have to go right back into New Game+. This game is way too cool to put off to the side right now. I almost figured there would be more rooms because the map is so big and you cover so little of it on your first playthough. Good stuff! Do you happen to know how many New Game+ cycles there are? Like, is the new content only for that one consecutive playthrough? I highly doubt they keep adding stuff on your 3rd game.
I don't know. I only just started NG+ myself. I kinda want to be surprised too.