Just took down driller as lvl 27 pala on hard
..47 paladins..66 nigts,5 red dragons and 53 archmages
..no gear that reduces psy dmg or anything ,no speldmg on boss just stoneskin and archmages shield...nights and palas where ganking driller bigtime meanwhile dragons and archmages took the ads he summmoned and damaging the boss when there was a free spot...really nice fight..bether then with the mage tbh