Diablo 2
Act 4: Map
The areas in Act 4 are:
The Pandemonium Fortress - the main starting area.
Outer Steppes - lots of cliff lurkers and doom knights. No sub-areas.
Plains of Despair - where Izual, the fallen angel, is.
City of the Damned. More monsters.
River of Flame - this is very short, just little pathways through fire. Not even really a maze. Great if you have ranged weapons to shoot across the fire.
Chaos Sanctuary - this is the area a lot of people have trouble with. It's not big - just one stone cathedral with three 'arms' on it that hold the 5 seals. There are TONS of nasty monsters though. When you trigger all 5 seals, Diablo appears and you have the final battle (except for the expansion set of course!)
Diablo 2 Walkthrough
Walkthrough Master Index