This is the introduction to the Left 4 Dead mapping tutorial. In this first chapter you will download the programs and copy over the support files that are required to start your project.

This chapter shows in-game footage of the map in it's current state. See the rooms, door, and panic event in action as they are demonstrated in both the current map and the same map with a completed navigation mesh.

Modifying brushes can be very easy. This chapter reviews the different ways to move, copy, clip, and divide brushes within Hammer.

In this chapter you'll learn how to create and place two separate ladders. One of the ladders will be accessible to both the survivors and the infected. The other ladder will only be able to be used by the infected.

Bring back fallen survivors by using a rescue closet. In this chapter you'll learn how to create a rescue closet room and place the info_survivor_rescue entity in it.

In this chapter you'll learn how to spawn special infected enemies using the commentary_ zombie_spawner entity.

Create a pit for the survivors to fall into and change the camera view, using the point_deathfall_camera entity, when they fall down it.

In this chapter you'll learn how to place items and weapons around your map and set it up so that they spawn in different locations randomly.

The second example of the map being played in the game shows the ladders, randomly spawning items and weapons, special infected spawns, rescue closet, and the deathfall camera.

This video will show you how the intro to "Fort Noesis" was created and the necessary entities the intro uses.