Many hates Hexos maze because it's really annoying
while playing on PTR 5.3 found that atleast 3 classes can avoid his maze.
1.Warlocks - so put Demonic circle out of his maze and after Hexos teleport you in middle fast click Demonic Circle: Teleport.(notice that sometimes fight resets)
if you click too slow you can touch his maze and get ~1m hit but still it can be survived if you have Grimoire of Sacrifice(voidwalker) and Sacrificial Pact (use shadow bulwark and pact after you set circle)
2.Mages - very simple when he port in middle - blink = win!
3.DK's - much interesting there is a glitch with army , so when you ported in arena dont move and cast army when boss appears army will aggro him and for unknown reasons his maze wont hit you at all!! (taunt boss or you waste time to beat enrage)(DONT MOVE ALL FIGHT!!!!)