just finished (more or less) a first playthrough on normal. level design is very intricate throughout the whole game, i could easily see replaying these missions several times over and still finding something new every time. even just trying to pick standout missions seems pointless, they pretty much all standout. doing a second playthrough now on expert, but as of now i can't even pick a favorite. this feels like Thief at it's absolute best.
didn't finish every mission though. had an issue with Jaws of Darkness where i didn't realize that a passage opens up next to the statue where you get the harp strings, which is my own fault. Skacky was kind enough to let me know where to look. i got all 4 parts of the elemental medallion, but didn't know where the door was to use it. just felt exasperated at that point. maybe i'll appreciate this level more on the second playthrough.
also didn't finish the final mission Black Parade. gave it about an hour, but it felt like i would be wondering around for hours trying to figure out what to do. again, maybe i'll fell different after a second play.
those few missions aside The Black Parade is unbelievably good. this is something i'll be playing for years to come