No Loss thoughts?

[Hagbard]

Oh boy, I am trying the necromancer now for hours with several tactics but it seems to go nowhere...

I play Skald, lvl 5, 1k leadership, anything cleared on the island but unfortunatly I am missing 1 magic rune to get order magic... and I have only one call of nature scroll... sigh this sucks, I really wanna do this as no loss, but no clue how. dont wanna restart due to rnd factors...

I face these forces:

55 undead spiders
49 skeleton archers
34 zombies
12 ghosts
7 vampires
1 ancient vampire

what do u think is the best line up against these forces? I tried with so much... really wanna beat this, without restart