needed to devolve some units here, since future cat can tank 2 puffington hits, and catyphoon will rush ahead of modern so puffingtons need another hit before they can be lured, which takes too much time. so this does require a low enough leveled modern cat to do
anyway, kill all the metal doges, and make sure all of the spawned units are near the base, then spawn idi. the puffingtons need to kill everything at the same time they get hit by idi, then they have to get lured so bahamut can hit them twice. use slow beam when they get kbed.
modern 30
idi, bahamut 40