Hero Ark solo?

Is it very difficult for a hero to solo ark? If not, what type of strategy and how high of a range are we looking at?

I'm pretty sure it's impossible to solo Aky on a class without any magical damage skills. You won't be able to kill the snakes, which are immune to physical damage, and they'll over run the map, healing Aky by some large multiple of 10m every second. Unless you can somehow outdamage that.