I think the hardest astral god is Astraeus. He has a shield cheat and he can summon minions.
I wish KI would make it where wizards who solo could be able to defeat this boss and last one in WT.Alot of the times I'm the only one around and get upset after trying over and over again and can't move on. The dulin brothers you have to defeat them so many times it takes so long I allways have to quit. In the waterworks the boss is 20,000 like impossible solo,I have tried hiring henchmen but them if they hit the boss when your not suppose to it did'nt help either just like the tag with the dulin brothers. Please KI make it where solo players can do it by themselves , we do pay for the game and want to continue not just quit playing the game with total frustration.