I've watched it in full twice, with a large gap of years between, and I still can't actually remember much at all about it.
The early part about the kids was ok, I remember a couple of scenes from that part, where they peep on some people making out (?) and when they knock that guy to his death at the subway station stairwell, but other than that, it's all a blank.
I remember it was a very atmospheric film that flows well while you watch it, but nothing really lingers in the memory. Sort of, good acting, sets, costumes, music, script, but no memorable set pieces. Though if someone mentioned "you forgot about THIS scene" that might bring it back I suppose.