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Suicide Blitz/The Underground

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Suicideblitz 2underground
Chapter 2
The Underground
Campaign Suicide Blitz
Suicide Blitz Chapter Chronology
Chapter 1
The Apartment
Chapter 2
The Underground
Chapter 3
The Law
"Across the Bridge! Go! Go! Go!"

The Underground is the second chapter of the custom campaign Suicide Blitz. The survivors head back to the road and pass by several apartment complexes until they head to an apartment sub-basement entering the sewer system. Going through Fort Harris County's sewer network, the survivors eventually come out to a tunnel that is jammed with vehicles and find access to the Fort Harris Police Department basement.

Strategy Edit

Also see: Tactics

All campaign walkthroughs are done on Normal difficulty in single player, and are meant to give tips on what to do and generally point out things that might otherwise be missed.

There are, of course, a few key things to always remember:

  • Stop, look, and listen.
    • Being observant might alert you to something nasty ahead of time, like a Witch, Special Infected or Tank, and allow you to prepare yourself.
  • Teamwork.
    • This cannot be stressed enough. Left 4 Dead is supposed to be a cooperative game. Communicate with your teammates, if you're playing with others, or if you're by yourself with the AI, point out things they might otherwise miss. In all cases, watch out for each other and take care of each other. You are not going to survive the zombie apocalypse by yourself.
  • Be ready for anything.
  • Don't panic.

With the Streets overrun, can the Survivors find safety in the Underground?


At the beginning, the AI Survivors will grab:

This is not always absolute; the AI Survivors may occasionally attempt to balance out the ratio of firearms depending on what the human players pick up first.

Heal up any wounds incurred from the last incident if you have any spare First aid kits, otherwise hold onto this set of health packs as this chapter won't be as easy as The Apartments. After leaving the safe room, make a right turn up the stairs and through the door leading back onto the streets. Dispatch of the idle Infected here, them move forward to a doorway near to a large wooden barricade. Go through here and head on through the alleyway leading into a building. While in the alley, watch out for Hunters attacking from the rooftops.

As you continue through the building, listen carefully, as a Tank sometimes spawns here. When the Tank is dispatched (if he appeared), continue on through the building and towards a blasted out hole, which leads to the underground. There are wooden struts embedded in the wall that can be reached by jumping up. This is necessary if a Smoker or Hunter managed to immobilize a Survivor too late to jump down the hole.

Once all of the Survivors are down the hole, come out and walk carefully along the ledge and onto solid ground again. Again, a ladder is available, should a Survivor get captured by a Special Infected back up near the hole. The tight quarters here make it prime territory for Boomers, as there is little room to move. Jump over a bunch of boxes to a large open area. There is a Hunting Rifle on one of the tables which the AI Bots will grab if they haven't encountered Tier 2 weapons yet and also a second Pistol. There is a door with a red light over it which cannot be opened yet. Head along a catwalk to a fuse box. This is a Crescendo Event so activating it will bring down a bridge and summon a horde. Make sure you are ready before doing so. Once the horde is dealt with, the light over the previously mentioned door will glow green and the door will open.

Proceed through the door to the next level and through another door with a green light over it as well. As you go through the tunnels, you may notice a safe room. But the problem with this safe room is that both doors have already been ripped off (the exit door on the upper floor) and overrun by the Infected. Proceed through the ex-safe room and through some more tunnels. A Witch may spawn around here. It may be a good idea to have someone with a shotgun (Pump Shotgun or Auto Shotgun) to go and deal with the Witch, should she be in your way. If no-one has a shotgun, have the person with the least amount of health startle her as to avoid her crippling your team too much, or use a combination of Molotov and gunfire to take her out before she maims any of the Survivors. When she is dead, carry on through and into a road tunnel. Continue through here to a blasted out hole, which leads to a safe room (judging by graffiti, a replacement for the previously overrun safe room). Get everyone inside, heal up, and take a breather as you close the door and prepare for The Law.


waiting for info



  • Despite the fact safe rooms are typically a long way apart, the distance between the overrun safe room and the newly built one isn't as long as between other safe rooms. It is presumed the previous survivors had to quickly set up defences from an attacking horde.
  • Even though it was a safe house, you will not find any supplies in the overrun safe room as the previous survivors probably took them all with them.
  • One of the TVs show a quick second display of Valve's Half Life 2 character G-Man on the screen.
  • On rare occasions, you may find and use an explosive barrel in this map.


Custom Campaigns
Left 4 Dead Left 4 Dead 2
I Hate Mountains Lost in the Woods / Climbing the Manor / The Underground Way / Lumberyard Evacuation / Lakeside Finale I Hate Mountains 2 Lost in the Woods / Climbing the Manor / The Underground Way / Lumberyard Evacuation / Lakeside Finale
Dead Before Dawn Citylights / Anna is gone / The Mall / Clean Up / A New Dawn Dead Before Dawn Too Citylights / Anna is gone / The Mall / Clean Up / Undead Center / A New Dawn
Death Aboard The Prison / The Prison Yard / The Docks / The Ship / The Lighthouse Death Aboard 2 The Prison / The Prison Yard / The Docks / The Ship / The Lighthouse
Dead City Riverside / Back Alley / Draw Bridge / Water Plant / Subway Station Dead City II Riverside / Back Alley / Draw Bridge / Water Plant / Subway Station
Heaven Can Wait Aircrash / RiverMotel / OutSkirts / CityHall / BombShelter Heaven Can Wait II Aircrash / RiverMotel / OutSkirts / CityHall / BombShelter
Vienna Calling Innere Stadt / Bahnhof / Nussdorf / Donauinsel / Donauturm Vienna Calling Innere Stadt / Bahnhof / Nussdorf / Donauinsel / Donauturm
One 4 Nine The Dawn of Zombies / Military Base / Bad Moon Rising / Mein Gott / The Tomb One 4 Nine The Dawn of Zombies / Military Base / Bad Moon Rising / Mein Gott / The Tomb
Suicide Blitz The Apartment / The Underground / The Law / The City / Stadium Finale Suicide Blitz 2 The Apartment / The Riverwalk / The Law / The City / The Stadium
Welcome to Hell The HotZone / The Wall / The Bridge / The Alleys / Trainstation Finale
Gas Fever Dead Zone / Riverside / Construction Site Finale
Haunted Forest The Forest / The Steeple / The Manor / The Tunnel
Detour Ahead Detour / Hill / Warehouse / On a Rail / Final Road
Urban Flight The Boulevard / The Rooftops / The Harbor / The Airfield

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