Kops helped me get several ogre corpses, due to some being too small and a couple turning into undeads several seconds after killing, before we had a chance to preserve them. We finally did get a corpse of appropriate size (a 36k ogre mage) and i got it to the summoner. When I sacrificed it, the first spider demon we ran into killed Kops in 3 rounds and put me to 150 hps. Suffice to say, I failed defending the summoner and that sacrifice failed. Seems pretty intense for a medium level, but oh well. I guess I'll try again tomorrow.