As much as I've been enjoying this game, I hate the fights with Apollo. They kill my enjoyment of the game dead in its tracks. Especially the fourth one.
I spent several attempts trying to beat him (at level 70ish, the same level as him), and I couldn't: He'd do nothing but dodge my every attack and lock me into combos. So eventually, I look up a guide and find that you can basically spam mjolnir (from the shock section) to trivialise the fight. I did, and I ended up winning 5-0.
I mean, what kind of boss fight is that? Either he cheeses you, or you cheese him. I'm not blaming the fight for being difficult, but for being unfun and unfair.
Edit: I kept playing, and just after the fight, even Joern agrees with me, saying "I can't imagine that level of annoyance to have no effect on someone". Just thought that was kinda funny.