(adsbygoogle = window.adsbygoogle || []).push({}); I decided to make this strategy, i got to round 34 with this the first time we did it. I have found strategies that look much like this one but i made it more detailed.

Part 1: Preparation
This is the MOST IMPORTANT part of everything!!!
GET COMFORTABLE! Before you start the run, eat something, have a drink, go to the toilet. If you want to make it to the higher rounds, it will cost a lot of time, so if u need to shit while you're playing, you are pretty much screwed (i managed to go to the toilet while teleporting but it's dangerous.). So just make sure you are comfy as this will take more than 4-5 hours.
I recommend doing this with a real life friend (2 ps3's, 2 tv's), then you will not have lag and you can communicate good.

Okay let's start with the strategy.

Part 2: The strategy

Round 1-2: Don't buy a weapon! Keep your M1911. Knife the zombies. The one with the least money opens the first door upstairs. The other person opens the door to the MP40 room.

Round 3 till dog round: Continue knifing and if you have 1000 points buy the MP40. If there is a random box, give it a try.

1st dog round: Kill the dogs with the MP40, then reload and get the max ammo.

1st dog round till 2nd dog round: Open up the doors to the stage and don't turn on the power yet.

After the second dog round (round 10,11,12): Turn on the power, link the teleporter, and buy jugger-nog. At the end of the round leave a crawler and try the random box a few times. Do not buy speed cola

Recommended weapons:

Player 1: Thundergun, HK21
Player 2: Ray Gun, HK21

Monkey bombs are strongly recommended for both players, especially player 1

Instead of the HK21 a Galil or Commando is also good for the next few rounds. A RPK will also do the job instead of a HK21

Round 12: There is now a full circle, here it is.

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Don't buy the door left from the stage! If you need the random box go through the left door at the lobby and buy doors till you found it.

If you have the circle: Walk it. If you need ammo for the MP40, buy it from the wall.

Pack-A-Punch your weapon only if you are fully OUT OF AMMO and there are no dogs coming for the next few rounds. Dogs come every 4-7 rounds.

Round 30+ : Start activating traps, activate the turrets if you walk along them. if there are a lot of zombies, activate a normal trap. The turrets weaken the zombies so you can kill them easier. In the later rounds you need very very much bullets to kill just 1 zombie.

IF SOMEONE IS DOWN!

Player 1 down: Player 2 throws a monkey bomb or uses his thundergun to remove zombies, then revives player 1. Player 1 immediatly buys jugger-nog.

Player 2 down: Player 1 throws a monkey bomb, then revives player 2. Player 2 shoots his Thundergun and immediatly buys Jugger-Nog.

If you don't have monkey bombs and there are too much zombies around, run the circle. On your way buy quick revive and activate traps. If you are fast enough it is possible to revive your mate. Otherwise finish the round yourself and end it at the random box room so your mate spawns there and he can buy a random weapon.

PRO-TIP: While reviving you CAN switch to your weapon and still revive. Press the switch weapon button (Triangle on ps3). It's possible to use the thundergun while reviving, which is sometimes useful.

Some other tips:

The teleporter

If the teleporter is ready, link it! And as soon as you are at the teleporter, wait till the zombies come in and then teleport, the teleporter is also a trap which kills zombies. So that are some free kills. If you are in the pack-a-punch room throw down grenades and buy new ones, then toss them and buy and so on.

Power-Ups

Fire Sales
If you have one in an early round and there are no zombies around, great. Give the boxes soms tries. In the later rounds, don't even get the fire sale. Don't risk your life for something you don't need. If you really need weapons, get it and use monkeybombs or a thundergun to keep the zombies at a distance.

Max ammo
Always get this power-up. Ammo is very important in the later rounds. The person with the thundergun shoots the zombies and throw monkey bombs before you get the max ammo. Reload, and pick it up.

Rebuild
This powerup can be handy in the later rounds, but do not risk your life for this.

Nukes
Very handy in the later rounds and you should always try to get it. Except in the early rounds. All the spawned zombies will be killed and you miss points. Before you get it, kill the most zombies. A nuke will give you 400 points. 800 when X2 points is on.



Good luck with this and thanks for reading. If i helped you please +rep