1. Send one zombie through the swarm of humans without zombifying anyone to get Quake.
  2. Send the zombie still at the plane to zombify the officer on the left of the plane.
  3. Send the zombie at the place you got Quake to zombify the officer in the room.
  4. Send one zombie in the room to next to the door leading up to the hall.
  5. Use Quake.
  6. Zombify the officers (1 in normal mode or 3 in hard mode by the plane, 1 in the upper hall) quickly or they will get up.
  7. Zombify the humans or scare them into the bottom hall.
  8. Send your zombies to zombify the officer in the very bottom room by going at him from both sides.
  9. Send all to zombify the rest of the humans. They should all be in the bottom hall or in the leftward room.

Note that the There and Back Again achievement is obtained on this level. Instead of step 2, send the same zombie back without zombifying anyone to get Speed.

thumb|300px|left from Aaarto

ZD DC Icon Washington D.C. Levels
The Mall
1 Introduction 2 Lower Mall 3 Sports Store 4 Supermarket 5 Upper Mall 6 The Cinema 7 Bonus Level
Power Plant
1 Power Plant 2 Main Reactor 3 Nuclear Waste Zone 4 Lower Offices 5 Backup Generator 6 Laboratory 7 Bonus Level
Police Precinct
1 Police Precinct 2 Archives 3 Holding Cells 4 Cafeteria 5 Fifth Floor 6 Jailbreak 7 Bonus Level
White House
1 The White House 2 Press Conference 3 Ballroom 4 Rose Garden 5 Situation Room 6 The West Wing 7 The End

ZD London Icon London Levels
Terminal 5
1 Touchdown 2 Baggage Claim 3 Ground Crew 4 Immigration 5 Duty Free Mauling 6 Arrivals 7 Bonus Level
1 Into the Woods 2 Scout Camp 3 Riverside 4 Hunting Ground 5 Cornfields 6 The Farm 7 Bonus Level
The Labs
1 Lab Entrance 2 Lab Offices 3 Databanks 4 Test Chamber 5 Containment Cells 6 Security Control 7 Bonus Level
The Palace
1 Main Gate 2 Hallways 3 Panic Room 4 Royal Ballroom 5 Servant Quarters 6 Throne Room 7 The End

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