An End Times campaign in Total War needs to allow players to correct this. where you play as ALL the non-Chaos factions in sub-campaigns, and it's all boiled down to a final stand at Middenheim. Your objective? You must hold the line for two hours while Sigmar, Malekith, Alarielle, Nagash, Balthazar, Tyrion, Grimgor, and Caradryan stabilize the rift. Don't worry, this time there's no Mannfred. You have completr control over an army of Imperials, Bretonnians, Elves of all 3 sub-factions, Dwarfs, Lizardmen (Who in this version don't ditch the world), Greenskin's, Ogres, and Undead of both Vampire Counts and Tomb Kings.
The Computer will throw wave after wave of Daemons, Chaos Warriors, Beastmen, Skaven, and Chaos Dwarfs of completely random units at you. (Such is the nature of Chaos) And they are lead by Archaon.
How would you deploy your forces? What units would you choose? You can place units on the ground, in the battlements of Middenheim, and place a blockade of air units.