Galan007
|Quantum Observer|
Tbh, I have to read almost everything Morrison writes multiple times to comprehend wtf is actually happening on a deeper level(ie. understanding 'the story beyond the story' or w/e.) Some of those would include: The Filth, The Nameless, Doom Patrol, Animal Man, All-Star Superman(the Bizarro World issues), Final Crisis, Multiversity(actually had to Google how to read the Pax Americana issue), etc. etc.
Green Lantern: Willworld was also a doozy that took me a few rereads, but it's great. Same with the final arc of Carey's Lucifer v1, all of Watters' Lucifer v3, Gaiman's Sandman: Overture, Moore's Promethea, Johns' Doomsday Clock, Spurrier's John Constantine: Hellblazer + Hellblazer: Dead in America, etc.
Hickman and Ewing can get extremely intricate with some of their stories as well(rereads are often required), but they're typically structured in a less 'meta' format than some of the above.
Some hyper-obscure stuff that never made any sense to me(no matter how many times I've read them) are comics like: Cryptozoic Man, Mondo, and The Superannuated Man... But I don't think those are meant to be comprehended anyway. /shrug