I found it difficult getting to page 50, then gave up. Also gave up on:
One Hundred Years of Solitude - Marquez
Ulysses - James Joyce
The Count of Monte Cristo - Dumas
Hunchback of Notre Dame - Hugo (though I did make it through Les Miserables with great enjoyment)
Mason & Dixon - Pynchon
Remembrance of Things Past - Proust
Being & Time - Heidegger
The Rainbow - D.H. Lawrence (made it through Sons & Lovers, wish I'd given up...)
Naked Lunch - Burroughs (Junkie was a good read.)
Treatise on Human Nature - Hume
Fear & Trembling - Kirkegaard
Physics - Aristotle (Made it through Nicomachean Ethics, with a struggle)
The Bible
I did make it through one Iliad (Rieu's translation!) but not another (Fagles' translation)