Ugh, what can I say except that this series started out so amazing for me. I read Delirium way back when I first started reading again and dystopian novels were slowly gaining popularity and I loved every minute of it. Then I picked up Pandemonium last year when I love of dystopia was dwindling, but I still had an affinity for this series because I loved Lauren's writing, her vivid details, and her characters. Alas, Requiem failed to meet my expectations of an epic ending and basically fell all kinds of flat. Don't get me wrong, Lauren's writing style is still just as brillant and poetic, but as far as the story line went, I just couldn't get on board with how things ended. 
 For me, I felt like the pacing was dragging too much. For Lena's half of the book, it focuses on her and the Invalids making the journey to Portland, which seems to go on and on forever. Nothing really happen, action-wise, and you're really only dealing with Lena's struggle with deciding who she loves more, Julian or Alex. There was hardly any interaction with Lena and Alex, not enough for me at least. You basically get a lot of Lena staring at Alex like a lovesick puppy or her hating on Coral and Alex's relationship, all the while curling up with Julian. I really could care less about this love triangle now. 
 As for Hana's part, if anything, it really just made me hate her more. She was so naive, narrow-minded, and selfish. Yes, even after she's cured, she still has a twinge of remorse and seeks out Lena's family, but it still doesn't make up for what she did or how she thinks/acts. I was pretty bored for most of her chapters, to be honest. Even at the end, when everything went to hell, I didn't really care for her at all, and that's when I gave up on this book as a whole anyways. 
 I get what Lauren was trying to go for, leaving everything pretty much up in the air and having one heck of an open-ended ending, but there were just too many questions left unanswered, that it didn't even feel like an ending at all. I got no sense of completion or contentment from reading Requiem at all. There was no sense of "Ah, okay then, I'll just use my imagination and dream up what happens to this world, where the hell Julian is, and if Alex and Lena ever get back together". Nope. Not at all. Everything was pretty lackluster, despite the eloquent writing, and I was seriously bored the whole time. While this series had so much potential and a very unique idea, the books got progressively worse for me and with an ending like that, I'm on the fence if I even want to add this last book to my bookshelf. Clearly, by having just Delirium and Pandemonium is enough because she might as well have ended the series right then and there with the ending she gave for Requiem. 
 Maybe it's because I don't like dystopians anymore, but I think this series was over for me halfway through Pandemonium. Requiem was nothing more than 300 pages of Lena journeying to meet up with Hana again, find out that she betrayed her, and then have one last run-in with Alex before everything fades to black. I feel like I could've just read the last 90-something pages of this book and gotten just as much out of it as I did reading the whole thing. I guess the short and simple thing for me to say is, I didn't care for this book at all and it was, in my opinion, a terrible way to end a series.