I came up with a
loss-less solution for the giant spider.. (at first I thought it WAS impossible)

(am
playing impossible)
Here's how you do it..
- Get rune magic level 3 (you need the spell
gift)
- Next get the scroll "song of the wind" I believe you get it as a reward for
fulfilling a quest for a map
- Then use it until you get "Royal Griffins" (as in travel to a map cast it and reload a new map if you don't get "royal griffins") I would also recommend only loading this with MAX leadership as in it's time for the fight.. the more royal griffins you have.. the more units you create.. I had 23 of e'm creating
53 heavenly guard
- I would also recommend level 3's in magic on transmute and concentration (I say
recommend but transmute is probably a
must have for no loss

)
I would also recommend you pick up the griffen banner at fastland.. (I believe it's
always there?) because if you equip you get about 5 more griffins then normal leadership..
Anyway, all you do in battle is kill spiders and continually reload "royal griffins" at 20 spell points a shot.. I had 5700 leadership (mostly with equipment) and was level 18 protect your units w/ griffins/heavenly guard or use the "maidens" to consistently restore any lost core troops
(I think this is obvious.. but do NOT attack the spider with your
core troops only heavenly guard because he counter attacks half the time killing your units.. only do this for
no loss anyway

)
Also it's helpful to have the spell "phantom" and
use it on maidens which will allow you to restore every troop
including maidens!
Actually, wish I took a screenshot.. (had like 8-10 heavenly guards) could show you too.. anyway.. I won no loss with giant spider.. but before I figured that out.. I did think it was
impossible.. my battle went to like round 18 or something and I'm a mage.. but I'm sure there are
faster/better ways?