This is my guide, with tips and spots on how to get Killing Spree Achievement.
 

Intro

Disclaimer

 
This is how I achieved the achievement and how it worked out for me. It might look different for others depending on their play style.
 
 

Preparation and tips

 
This achievement doesn't require any special skill, but it is worth learning some mechanics to increase your chances of reaching the 10 minute mark.
 
 
Always be close to your teammates. They will need you, and you will need them. To get rid of a special zombie that has grabbed someone, hit them with right click. Sometimes, it might not be possible, such as when a smoker grabs them from higher ground. In that case, it is better to shoot the zombie rather than running to your teammate.
 
 
You can use melee weapons to help your teammates if they are being overwhelmed by zombies.
 
 
Little Tips:
 
 

• Keep your guns and ammo close so you can always replenish.
• If possible, always keep a Molotov and Bile Bomb with you
• Boomer Vile or Molotov tanks should always be used. Pipe bombs can be used to disperse zombies if they become overwhelmed.
• Be on the lookout for CEDA agents (in hazmat suits zombies). They can drop Bile Bombs.
• Avoid areas where zombies can reach you in multiple ways.
• Keep your distance from anything, so that smokers don't try to seduce you.
• Tanks do not spawn between 9:00 and 10:00 minutes.

 
 

Mods

 
There are mods that can help you, even if you are a lonewolf like me.
 
 
https://steamcommunity.com/sharedfiles/filedetails/?id=1968764163 – [steamcommunity.com]
 
 
 
https://steamcommunity.com/sharedfiles/filedetails/?id=2635458863 – [steamcommunity.com]
 
 
 
https://steamcommunity.com/sharedfiles/filedetails/?id=622388851 – [steamcommunity.com]
 
 
 
 

Dead Center

Gun Shop

 
Open the shop, and then stay inside, aiming for the door. To refill your ammo, grab a gun from the inside. Keep shooting until a tank is in. Then, backpedal further into the shop.
 
 

 
 

Mall Atrium

 
You will have a great view if you stay near the mall's entrance. Be aware of smokers and loop tanks that are circling plants. Refill ammo and obtain supplies as needed.
 
 

 
 
 

The Passing

Riverbank

 
This position should be held behind the stairs to the tree.
 
 

 
 

Underground

 
This position should be held at spawn. It's important that you pay attention to the narrow corridor to your right.
 
 

 
 

Port

 
Stay at the bridge entrance. If you need ammo, you can get it on the other side.
 
 

 
 
 

Dark Carnival

Motel

 
This position should be in front of the pool. To shoot zombies, it is important to have someone standing on top of the flowerpot. This will ensure that the wall doesn't grab the person. When you need it, get ammo at the spawn.
 
 

 
 

 
 

Stadium Gate

 
After you spawn, move forward until you see a trash compactor. Move to the other side of that fence. When you need ammo, go inside the building to the right.
 
 

 
 

Concert

 
To burn zombies, stay on the right side of stage and press the button near the mic.
 
 

 
 
 

Swamp Fever

Gator Village

 
Call the ferry and wait for it to arrive at your location.
 
 

 
 

Shanty Town

 
You will find supplies inside the bar if you stay inside it.
 
 

 
 

Plantation

 
Use the mounted gun when you can.
 
 

 
 
 

Rainstorms

Burger Tank

 
Hold spawn, ammo inside the building
 
 

 
 

Sugar Mill

 
Stay behind the truck when there's ammo.
 
 

 
 

Cane Field

 
Keep the open area at the gas station.
 
 

 
 
 

The Parish

Waterfront

 
This balcony can be used to hold ammo and placed on top of the bus if necessary.
 
 

 
 

Bus Depot

 
Keep this angle near spawn and you'll be able kill zombies before you reach them.
 
 

 
 

Cemetery

 
This one was tough. Hold this place, there is ammo to the right. Zombies will take some time before they reach you. Some will even get past gravestones. To avoid tanks, run to the large corridor to your left.
 
 

 
 

Float

 
You can move the float, but you should remain on the balcony. Zombies won't spawn on you back.
 
 

 
 

Bridge

 
My favorite place was to stay in tents. Zombies won't be able to reach you quickly and you won’t get taken away from it. Avoid running around the helicopter as tanks and chargers could grab you and take you to the water.
 
 

 
 
 

Sacrifice

Train Car

 
This angle will allow you to see the tiny and big boats. Pay attention to your right. Some zombies can get around the tiny boat.
 
 

 
 

Barge

 
Hold this angle while you climb the ramp. There is ammo in the building to your left.
 
 

 
 

Port

 
Hold the bridge entrance, and get ammo on either side of the fence.
 
 

 
 
 

No Mercy

Generator Room

 
Stay in the corner of the dark room. Most zombies will fall from the ceiling. Run around when tanks arrive.
 
 

 
 

Gas Station

 
Run around the platform by holding onto the lift.
 
 

 
 

Hospital

 
After you spawn, head towards the double door on your big corridor. There are some supplies inside, a shotgun, and an AK. Zombies will always come in one direction.
 
 

 
 

Rooftop

 
As in the campaign, you should stay at the mini gun and run through the pipes when tanks arrive.
 
 

 
 
 

Crash Course

Bridge

 
Stay at the doorway inside the building. Two walls will be broken by zombies from the roadside.
 
 

 
 

Truck Depot

 
Stay inside the mini gun.
 
 

 
 
 

Death toll

Drains

 
You will find some supplies if you go through the hole from which zombies come. Keep pressing the button to stay on the bridge. You will find laser sights within the door on the other side of the bridge.
 
 

 
 

Church

 
If you are feeling overwhelmed, keep your hands on sandbags and run into the church. But be careful of zombies that might be coming through it.
 
 

 
 

Street

 
Run to the opposite side of the forklift, lower the forklift, and hold this angle.
 
 

 
 

Boathouse

 
You should stay at the dock. Use laser sights to see the building further up the road.
 
 

 
 
 

Dead Air

The Crane

 
You can lower the crane, climb it, and then stay in this area.
 
 

 
 

The Construction Site

 
Hold this angle while you enter the construction site. You will find ammo between the hordes.
 
 

 
 

The Terminal

 
Start the game by going to the area that the van has unlocked. Keep this angle.
 
 

 
 

The Runway

 
Continue on to the airport building on your left. Stay inside the dark area with pillars.
 
 

 
 
 

Blood Harvest

Warehouse

 
Open the door, and follow the tunnel to the end. Stay at the stairs. There is ammo at its top.
 
 

 
 

The Bridge

 
Locate this train garage or some other place, and keep it inside.
 
 

 
 

The Farmhouse

 
This one can be difficult, so stay on top of your barn and don't let your guard down.
 
 

 
 
 

Cold Stream

Junkyard

 
Stay inside the shop and go around spawning, as zombies will only enter through the door.
 
 

 
 

Waterworks

 
Hold onto this tree. Be on the lookout for zombies high above the wall.
 
 

 
 
 

The Last Stand

Junkyard

 
The best way to stay was inside the main building. You might need to leave the main building when tanks arrive.
 
 

 
 

Lighthouse

 
Keep your eyes on the lighthouse.
 
 

 
 
 

Outro

I hope it works for you as well as it did for me. If you'd like, please bookmark and review this guide! You are welcome to suggest anything!
 
 

 
 

 
 
I hope you enjoy the Guide we share about Left 4 Dead 2 – Killing Spree Achievement Guide; if you think we forget to add or we should add more information, please let us know via commenting below! See you soon!