well, spoilers, but dr manhattan is meant to be some super entity beyond human understanding, but the execution is weird
they have like, multiple frames of the comic where he's "perceiving" the frames out of order which sounds like it could be cool but it just feels really gaudy. and for a nearly omniscient god like person he definitely is pretty stupid.
the characters are pretty shit too. the "comedian" apparently thinks everything is "all a joke" and therefore justifies his murders and rapes or something. sounds like something a teenager would think is a "complex" character.
then there's rorschach who is like, edgy gamer vigilante angst personified. again, great with teenage boys, less so when you're an adult.
i liked his other work v for vendetta a hell of a lot more, at least the movie of it.