http://www.newsweek.com/assassins-creed-odyssey-gates-atlantis-guide-minotaur-medusa-sphinx-cyclops-1158456

Assassin’s Creed Odyssey seems like a straightforward game, until about halfway through when things really open up. You thought this was just about your family? Oh yeah, there’s also a crazy cult to deal with. And Atlantis. Unlocking Atlantis involves recovering four artifacts, but that’s not an easy task. The artifacts are guarded by mythical beasts, and they’ll require smarts and strength to beat.

How to beat the Minotaur, Medusa, Cyclops and the Sphinx in Assassin's Creed Odyssey Ubisoft