Sounds like a pretty cool friend to be the one to volunteer placing 2500 points of
csm and then just remove most of them as fodder that did nothing almost immediately afterwards. Then again he might win so it's worth a shot. I'd probably give it a go with Orks who literally die trying ta loot da fing.
Actually I'll take back my previous post up above, because I admit forging narrative games are great with two people willing. In the situation above if the Orks keep getting mowed down and tabled too fast I'd even ask to try the Waaaaagh! Ghazzy mission rule that allow Ork troops to keep respawning back on the map as ongoing reserved when killed just to see how much that Titan can wipe out before finally dropping.