Quote (Taurean @ 7 Apr 2020 16:47)
Yeah it is hard. But you have to run back to act 1 to summon full stack of skeletons, using waypoints, and not using town portals, so that you unsummon the town portal in chaos sanctuary.
Then you have to get a little lucky. You summon a clay golem on diablo's opposite side, and have your skeletons run up to him and start dealing damage. Always keep amplify damage active. Always re-summon clay golem when he dies, he usually dies with only 1-2 hits from diablo. So this requires quite a deal of mana.
Diablo can be unpredictable too. He can suddenly turn and cast lightning wave on you, and also use fire nova at will, suddenly killing some or most of your skeletons.
But this strategy will deal a lot of damage, and you will kill him in due time. Just keep going back and forth resummoning new skeletons from act 1.
I did something like this.
I amassed my army and went at him, and when he deleted every skelet and my merc, i went to act 1 and gathered my skelets and then went back.
Did this 3-4 times and he finally died