Diablo II/Act I

The Rogue Encampment
This is the starting area, as well as the first town in the game. Only two exits exist, one that heads into the wilderness and one that takes you to the second act if the sixth quest has been completed.

Akara
Akara is the town magic user; she will sell potions, tomes, scrolls, staves and orbs and other related items. Talking to her will instantly fill your health, stamina and mana to their maximums.

Kashya
Kashya is the town mercenary merchant. She will allow you to recruit rogue archers of the sisterhood (one at a time) to join you in battle. And resurrect your dead one.

Charsi
Charsi is the town blacksmith. She will sell you weapon and equipment and can repair your items for a fee.

She also Imbute one of your item with magical powers if u have done the magic anvil quest

Deckard Cain
Although he won't show up until you or the creator of the game (if in Bnet) has done the Search for Cain quest. Deckard will identify any unidentified items in your inventory for free, he will also guide you on various quests by giving you information and he will follow you to every act within the game.

Warriv
Warriv will offer to take you in his caravan after you defeat Andariel. By doing so you will enter the eastern desert lands and be within Act II.

Quests

 * 1) Den of Evil
 * 2) Sisters' Burial Grounds
 * 3) The Search for Cain
 * 4) The Forgotten Tower
 * 5) Tools of the Trade
 * 6) Sisters to the Slaughter

Cold Plains
- Contains a Waypoint.

Stony Field
- Contains a Waypoint.

Dark Wood
- Contains a Waypoint.

Outer Cloister
- Contains a Waypoint.

Inner Cloister
- Contains a Waypoint. (Comes after jail level 3, not before)

The Cathedral
- Comes after Inner Cloister.

Jail 1
- Contains a Waypoint.

Catacombs II
- Contains a Waypoint.

Catacombs IV
This is Andariel's lair. It's laid out with an entrance containing dark ones and some shamans accompanying them. There is a double door that opens into Andariel's throne room; within the throne room itself there are are zombies, dark ones, tainted and Andariel. However Andariel does not show herself until you walk past the two first collums in the throne room, which will grant you time to kill the other monters before Andariel comes forth. It is advised to be prepared and set up a portal before facing her. Because when she starts attacking you she will pursue you a long way, maybe all the way to the stair way, if not upstairs after you.