Each Act contains its own unique set of levels with its own brand of foe. There are also sets of mini levels such as the sewer levels. Some of your battles will take place 'top side' but the majority of the time you'll be sorting your differences out where your screams can't be heard, deep underground.

The second Act, set in the desert surrounding the city of Lut Gholein will see you first set off through the desert but quests will
take you to buried caverns and underground cities. Pictures of latter two areas have not yet been released. The picture on the right shows the Amazon taking on a rather large Blunderbore above ground in the desert.

"In Act II, there will be a little less direciton," Max Schaefer (Blizzard) explains. "We want to open it up so we don't have to hold your hand the whole time".

This will enable you character to choose its own path, avoiding areas they are not yet strong enough to tackle with, building their character up through side quests.

Each set of levels per Act will be inhabited by a entirely new hord of monsters. Act III will be set in a rainforest setting, with Mayan/Inca type ruins and Act IV, possibly a snowy environment. Blizzard have promised that this final act will be more than three times the size of all of Diablo!