So I have been playing all day and am getting a bit better...but MANOMAN due some people just destroy in this game. I can't tell if any allegiances are more powerful, in general, but Zeus magic and spears infuriate me...I will eventually get a Zeus going and practice more with the spear, but I suck with the spear as of now.
Getting only slightly better at getting out of someone comboing the heck outta me...but there are still times where it's impossible.
Remember, Zeus has a low health penalty...he is quite easy to dispatch but he can make life miserable if you don't avoid his offense lol
Other tips would depend on your weapon of choice...swords are good for jump attacks, hammers for ringouts, spears for being annoying in the right situations, their length takes some practice to attack with and defend against.
Also try mixing up your loadouts. It seems to be less effective than going for all out offense but it helps to stay alive and achieve kills or even take on more than one at a time if you have decent all-around defense.