This is the easiest map to play in all the maps of Left 4 Dead and Left 4 Dead 2. It is possible to last on this map indefinitely. The longest players have lasted here is five hours, with the rounds ending due to exhaustion.

If the players are able to last times longer than 20 minutes, it should be visibly noticeable that the amount of special infected will decrease. This is because they get stuck in the far corners of the map. For this reason, the map, like every survival map, becomes slowly easier over time and people are able to last on this map indefinitely.

All players are lined up upstairs by the M16 spawn on the floor.

• The only weapon that is necessary to this strategy is the M16. There is no need to bring up extra weapons such as grenade launchers, SCARs, etc.\ from the first floor. The M16 at the top floor has unlimited ammo (due to the weapon spawn) and it is powerful while being sprayed continuously.
• Although the strategy is easy and straightforward, the players still have to be careful not to take too much unecessary damage. Although the positions are stationary by the ammo pile much of the time, the players still have to move to avoid the spit, chargers, and tank rocks that are thrown at them.
• There should be one player that is dedicated to checking the back. It is rare that zombies will come from the back, however, they need to be cleared out before they cause disruption to the front players. Also tanks might come from the back. In this case, the back tanks should be dealt with quickly so that the players can continue to focus on the incomig front waves.
• In some cases, e.g., being attacked by double tanks, the survivors will start to get overwhelmed. In this case, retreat back to the tents and finish off the tanks. You will have to advance back to the gun spawn in order to get ammo.
• Make sure that the positioning allows for all of the players to reach the weapon spawn.

by GuyGuy