I passed OCPJava 8 Programmer 2 with 80%. My experience with the exam was I found it harder than expected. I came out not sure if I would pass, but the result made me glad. I feel there was lot of ambiguity in the questions, kind of making me unsure if i had got things right or not. There were lots of questions on streams, did not get any at all on Serialization.
Thanks to Jeanne Boyarsky and Scott Selikoff for the book and the creators of Enthuware. I started out with reading the book cover to cover and then started doing the Enthuware tests. My average on Enthuware were in the 70 range, I got a few 80s as well. Got a 65% on the final mock test, which spurred me to start reviewing the book, spent the last week reading the book again which I think helped.