What I want you to do first is to remove ALL the guts, ALL the miscellaneous organs and ALL the pain, suffering etc. from all the episodes you've whatched.
After that make your choice of the BLOODIEST moment, and by bloodiest I mean the moment with the most blood in form of fluid. I cannot stress the fact that gore(guts, brains etc.) is to be left out enough, as there are existing blogs on goriest moments, whereas this purely refers to the amount of bloodshed.