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Ok, i haven't read around much in this forum so im sorry if a strategy similar to this was posted before.

Rounds 1-3: Try to get all knife kills but shoot a few times for +10's. Round 3 open first door and elevator(dont have to do elevator yet but you can for backup if you get over run).

Rounds 3-6: Have an MPL and just stand by the 1st elevator and get lots of headshots. Avoid grabbing nukes unless you know there's only a couple of zombies left.

Rounds 6-11: Take the first elevator down and don't open the debris that blocks the stairway just leave it closed for now. If you have 3 people: 1 person stands back on the left side of the elevator and shoots the zombies that come straight away down the aisle. Avoid shooting at the window because it's a risk of going down and that will be a problem. The next person stands back to the right of the elevator and shoots the zombies as they come straight away just like on the left side.(The right side tends to get more points). The last person(preferably the one with most points) covers the window behind the player shooting on the right side. Alternate positions with your friends during these rounds so you can all end up with around 15,000 points by the end of round 11. Save a crawler on Round 11.(Very important). While you have the crawler, open up all the debris on the middle floor and locate the mystery box. 1 person must have the Winter's Howl, 1 person must have the Ray Gun, and it's nice when 2 have a Ray Gun. Also, buy claymores. This is all for preparation for the scientist to make sure you kill him before he steals any of your guns to get a Bonfire Sale. So its also good to have like a Galil or Commando or whatever you like to upgrade because it will only be 1000 points. Then, set up your claymores along the catwalk on the 2nd floor and kill the crawler. When you get more claymores, put those down too. I am assuming that the scientist comes at round 12 here so...yea. The person with Winters Howl must shoot as much ice at him at the beginning to slow him down a ton even if he's coming at the one with the freeze gun. If he's coming after you, run a big circle around the catwalk until your teammates take him out with their ray guns. Don't turn around to shoot him when he's chasing you unless he's really slow and you have decent space from him. You should kill him every time if it's done correctly.

Rounds 13-?: 2 people run around a big circle on the second floor(not on the catwalk it's very dangerous up there!) and gather a big mob of zombies. Only shoot these in safe areas like under the big set of stairs near juggernaut while the 2nd person covers you. If you have 4 people, the other two are recommended to camp on the 1st floor near the small elevator. 1 person covers the two windows, the other shoots ahead as they come from that 1 direction. For 3 people on these rounds, you can either go on the 1st floor and cover everything if you think your good enough, or you could run a circle around the basement(avoiding going inside rooms where there is a bunch of stuff u can get stuck on). Use the teleporters to your advantage down there and shoot zombies when you are near one so you can have a good escape if you got too crowded.

Other Helpful Tips:
1. Save crawlers every round before the scientist(he comes every 5 rounds) and get your ray gun back. I don't recommend having it all the time because it is a very bad weapon for getting points. I would consider having the ray gun as a permanent weapon after round 24 or so.
2. Always make sure 1 person has the Winter's Howl. It is very helpful in bad situations.
3. Learn good spots to stop when you are doing the circle on the middle floor with a friend and see what spots get you downed easily because a zombie gets you stuck in a corner or something.
4. Save your ammo during this circle. Don't shoot when thers only like 1 or 2 zombies.(Unless you are getting trapped or something). The run is a technique to help you conserve ammo, and create large mobs of zombies safely, and shot them at once for good collateral damage.
5. If you have a good Ballistic Knife shooter, it's nice for 1 of the 2 people doing the middle floor run to have it.(Preferably someone who is good at evading zombies and doesn't go down much.)

If you have any other questions just quote me in this and ask em.

I'm kind of new to posting and creating threads and stuff so if it's kinda bad don't hate.
I could also use some Thanks and +Rep if this strategy helped you. It would be appreciated.


By the way, I have made it to Round 35 with 3 people that weren't even that good of players so I know this strategy works. For me at least...
Have Fun!

Thanks for the tut i will deff try it

thanks i'm going to try this