ExploderWizard
Hero
I'm not sure how accurate it is to call 3rd level (when you get web) a mid to high level campaign.
Sure, 30 orcs vs a 1st level party is going to smoosh the party. Two levels later, they're a speed bump, and probably so even without area of effect spells. The fighter's AC is likely in the negatives as is the cleric's. The orcs are hitting on a 20 while the fighter types and cleric blat orcs every round.
Really? 30 orcs is not a challenge to a 3rd level party? I remember facing 8-10 at a time in Keep on the Borderlands at 3rd level and not having that be super tough but 30 would be.