They removed the regeneration, the explosion when he dies, the meteorites that fell when he entered his second phase, the attack where he launched a red gas or smoke and when he stabbed himself in his second phase. And also the music of the second phase, although the screams give the same feeling as the music of the second phase. I think it's obvious that Mr. Droombringer was nerfed and buffed.
this diesnt work anymore due to them disabling the masteries making both players require rock star to do eg which in turn changes the entire eg due to getting tycoon much later