*sight* i guess i didnt explained it well ^^
the point is to use the ai as sort of both weapon and shild (in this case Rook)
that is insted of you fighting and reciving damage, rook do it insted of you
rook go in, you stay out, send your minions to help rook, you heal rook, you buff support waves and minions
the thing is that many players said they have a problem with ai on hard outlvl them
and while you dont spend money on equipment + the uber exp and gold income from massive battles
that you make with your minions + support Vs even support wave + general or assasin
if you lucky and enemy general is against rook then rook kills him for massive exp boost and you kill the minions
and support wave for gold boost
You then go to upgrade the citadel and get stronger minions (still without equipment)
after rook got his uber equipment and hit lvl 20 you spend all your gold on yourself
by that time you and rook (in this example as it can be any demigod) go in with massive upgraded support wave
and take the enemy down in 1 hit, all the way from the middle of the map to his base.
During this time Oak fights flank support waves and scares away other demigods + protecting flags
the end!