Let me start first.

Me = Monk, Act 4 is the hardest. Reason is because of his -75% healing effect and monk had to facetank him. Might be easier for Throwing barbarian and range characters.
Sokahr might give quite a problem to range, and of course the solution is to shoot him real far.
Odeg's jailer+molton will give problem to those without the ohshit button.
Xah'Rith is no longer a great threat after the illusionist remove from the latest patch.

That's my though.

to me.. actIII fella.. Xah'Rith
very hard for barb... maybe just me...
he keeps teleport away

ACT 4, no doubt.

HAHA. the ohshit button made me laugh..

*ohshit button*

true story

all are easy.

they are all just as hard at mp9-10

Dont know how to vote four of them not pain of my barb y, if u read four of them body language sure u know how to attend.... so u wont feel pain, also depends wht ur mp level

A4..coz hardest to find E lol

act 1, never drop me the key..ratio 1/20..badluck fuuuuuu

C which mp loh, if mp 1 all easy, if mp 10 all hard.. So far ok to all in mp 4-5.

Act 4 farmed no less than 20 times, until muntah darah lol.

Well, luckily we only need to farm act 4 once

Imagine if we need to get plan for every machine

act 4. hard to get nv since elites there are abit crazy too

For me it's the A2 key warden. It's a bad situation. Can't heal because missile dampening delays life steal (or teleports away before the shots land). Close up his whirlwind kills me, and at range his mortar kills me.

Luckily there's a cheap way of killing him

hungering arrow @ 100yards FTW!

yuhhaur when wanna go act 3 Key Warden?