Now, I haven't finished the book, in fact I have only read maybe 30 pages so far, but Ilium by Dan Simmons could be a fit. It features a character that is tasked by a divine entity to explore the events of Homers Iliad. It is Sci-fi though and I am not sure if the book will keep this characters storyline in Greece or even under this pact.
If someone has actually read the whole book (series) please chime in!
Awesome in that case I will definitely check them out. Great taste as well, I usually veer more towards deathcore but I love me some Pig Destroyer and Misery Index. I'm also always open for deathmetal suggestions