The falling chain was like a huge meteor, destroying everything in its way and sparing no one, living or dead. Actually, the four hundred million undead were reduced to only fifty million, however, those 50 million were the cream of the crop, the best and strongest undead.
As for the white specters, they were supported by the Holy Knights and the Marshall's army so they weren't completely wiped, yet. The battle between the two struggling powers continued and the collateral damage done by falling chains obliterated more than a hundred thousand undead, if not more.
The chains were absurdly big, just like the tentacle that came out of the red gate. Speaking of the disgusting thing, it was still in a bitter struggle with the Fenrir, each going at the other and attacking relentlessly.