This is the N-th time I've tried to beat Diablo 2, and it's happening all over again.
I'm a Paladin at lvl 28, ripped through the game without much difficulty until Chaos Sanctuary. As soon as I release the 5th seal there, a bunch of lightning-fast Venom Lords spawn and kill me with one-two hits (an my merc along with me). I opened a portal beforehand so I just grabbed a few spare items from my chest and when I returned to just loot my corpse real quick, portal back and re-supply, I was killed again - in one hit.
Now, why does this happen and what am I supposed to do now (portal gone, butt-naked and no decent stuff in pandemonium fortress' shops)?