The world’s most difficult books: how many have you read?

Literary website the Millions claims to have identified the toughest books ever written. How many of its top 10 have you read, and which others might be on your list?
Nightwood by Djuna Barnes;
A Tale of a Tub by Jonathan Swift;
The Phenomenology of Spirit by GF Hegel;
To the Lighthouse by Virginia Woolf;
Clarissa, or, The History of a Young Lady by Samuel Richardson;
Finnegans Wake by James Joyce;
Being and Time by Martin Heidegger;
The Faerie Queene by Edmund Spenser;
The Making of Americans by Gertrude Stein;
and Women and Men by Joseph McElroy.