The walkthrough for Torchlight follows the general sections of the game. Each tier of the dungeon encompasses several levels that share common enemies, areas, threats, and objects. Aside from the introduction to the game (noted below), each section of the walkthrough details new threats, plot developments, and secrets. Available side quests are noted in side bars.
When you begin the game, you'll be able to walk through Torchlight at your leisure. After becoming accustomed to the NPCs and the minimap, make your way to the left side of the zone to see the initial cutscene.
After the cutscene, follow the tracks to the mine entrance and click on the swirling gases with the label "Mines".