I pass this level on hard mode, this is how i made it.
I started with 4 swordwrath and send them to attack the first zombie, in that time you have to create more miners, put the castle archer, and made one spearton to defend, i recommend to buy the miner hustle, cure and the magikill wall and if you want the passive income gold. You need to make money so can buy a magikill and merics and one or two giants and some spearton to block the projectiles.
That‘s how i beat the deeds level, now i‘m gonna try on insane mode.
The exactly number of each warrior in the last attack was 1 giant, 3 merics, 7 spearton, 2 magikill and 2 archidons. The key are the magikill whit the magikill wall that kill the zombies fast.