Here's a small text I sent a friend who was disappointed in Diablo 3 after he finished normal mode. For those of you that haven't finished normal mode yet, read and see what's coming in nightmare/hell:
Give nightmare a try and you'll see where I'm coming from, towards the end of Act II Nightmare, you start questioning your spec. You start feeling the pain from just running into mobs and not caring what you face because in normal you simply used to spam your most damaging ability and destroy packs of mobs. Towards the end of nightmare, i kept wiping on packs and i had to put on some defensive abilities as well as going for Elective Mode and mixing talents from same type.
Avo and I zoned into hell, we literally, after mega wipes on trash mobs, say 'plan ?'. There was this one skelly elite pack of 3, that wiped us about 10 times. They have 3 abilities (aside from hitting like monsters). They are chained together, the chain deals about 5k per sec. They drop moving beams on the ground, and what's worse if you try to kite them, they pull you back in. It took us about 15 minutes until we finally decided that I take aggro from 2 and sprint away using my defensive abilities while he kills one.
Not to mention, the Skeleton King. Avo ended up using full defensive spec and I went AOE spec + defensive abilities for the mobs he spawns. If the skeleton king is a "mini boss', I don't know what the actual act bosses will be.
