this game is unbalanced

i was wondering if anyone else noticed this issue

im at mid game carrying most of the master heavy equipment on 2 of my heros, so they would have about 60 def, and since

thier at lvl 7 or higher they could have bout 24 health.

now comes this stupid spider with 170 attack and kills them with just 1 attack.

how frustrating, i mean by now i would like to have a real strong hero to be able to count on

seems like up to a point when im really strong financially i keep training archers and using them to kill monsters from afar

and even when i am really strong financially to train a unit w/ masters heavy equipment ,good sword ,a horse

in a company of 3 or more cost tons! , so does the train time..

btw - after that lame fight i closed the game