I don't see why we should put a limit to the "archer units". I lost some battles with my crossbow, and I don't see what is unfair in an army of 2x arrez boys and 2x goblins archers.
Troops selection : Ice Mage with the wand and the book if possible (but it's hard to have this guy level 2). Crossbowmen with Ptolos. Morgan and his calvalery. And anything you want. Elf bowmen and the canon make it easier, the steam tank too. Don't forget plenty of canon fodder. x)
First, don't move. Don't. Move. Ever. You'll have to destroy the first regiments (skeletons bowmen, that's all). => Ptolos + Ice shield Soon, you'll see a few mummies regiments. That was easy.
Then, wipe the two standing mummies regiments standing at the center. The crossbowmen can do it alone. They'll not move if you're far enough.
The necromancer should be dead at this time.
Next, look at the map, you'll find 3 catapults (I assume there is no Hand nor Black Grail, eh ). If you destroy one of the right, the dread King will charge, with all the mummies (4 regiments)... Don't do it ofc, these mummies are level 4. If you destry the one of the left, the Dread King will charge alone. Better, but still not easy.
Take your IceMage... And 'tornado' the Dread King. He has a magic protection, but you can heard him when he's hurted. And yes, you can kill him with that. The tornadoes can cross the map, ehe.
Then, kill the remaining skel' archers with tornado, and when there is nothing left, apart of the catapults, finish the job (the catapults have a somewhat short range) and charge with everything against the mummies.
I played all the Close Combat serie (WW2 game). 'Was good.
The 3 is the best, playing russians ; and you will learn how to flank Tigers in Stalingrad with your poor, poor infantery to get a little tiny chance to damage these monsters
since more points are availiable should we consider allowing level 2 mages to be used with the cost of the mage doubled for level 2. so Firemage level 1 cost 2 and level 2 cost 4