(adsbygoogle = window.adsbygoogle || []).push({}); Ok, well, here's a perfect strategy. Me and a friend of mine got to 41 doing it. We could have gone higher but we got tired and bored, so we killed ourselves. I'm writing this cause I'm so bored. It's Wednesday night, and I'm doing nothing . Hopefully people who are struggling with this map will find it easier now.

TLR;
Zeus cannon guy does circles in PhD. The other players camp in the little PhD room.
Read at the bottom for a little trick

What one person needs by Round 20:
-Zeus Cannon

Ok, so now that you know what you need by Round 20, let's get on with the tutorial.

1. Do what you normally do in zombies for the first couple of rounds. If you don't know, here's what you do: Get as many points as possible by shooting then knifing to maximize the amount of points being gained. Get to the power room via any way.

2. Once at the power room, each person should buy the box ONE time. After everyone has bought the box one, the people who got a ballistic knife/crossbow/special grenades should buy it again. After everyone has 1 decent gun, everyone NEEDS to buy jugger-nog. This is the most important perk. Two people get the stairs leading to the power room and the other two get the back.

3. By round 10-15, everyone should have a decent amount of points. Get a crawler. Now, you start opening up all the doors to the different landers and open the pack-a-punch room by launching the rocket. The person with the most amount of points buys the box until he gets a Thundergun/loses all his points. Then, the other 1-3 players try to get the Thundergun. If someone gets it, then GREAT.

4. Now for the real strategy. It should be Round 20+ now, and one person should have the Zeus cannon. Everyone meets up at the PhD Flopper area. The 1-3 players WITHOUT the Zeus Cannon will go into the little room that has PhD Flopper in it. This is going to be their permanent room. The person with the Zeus Cannon will be doing circles in the PhD Flopper area. I'm pretty sure there are a ton of videos on how to do it, so look it up if you don't know how to do it. The other players hiding in the room will take care of the window.

5. Now here's the strategy part. DO NOT KILL THE ZOMBIES! The person doing circles needs to continue doing circles! At one point, you will notice that no more zombies are spawning. Do you know what this means? The amount of zombies that are capable of being on the map at one time are following the person doing circles! Amazing right? Well, now you can turn around, and blow every single zombie following you with one shot from the Zeus Cannon. It will take 6-14 shots from the Zeus Cannon depending on how many players are playing to finish ONE round if you're on 30+.

Keep doing #5 until the Round is over.

I also figured out something EXTREMELY interesting .
You know how people wait till the end of the round and get a crawling to go to the box or whatever? Well, you don't need to do that! If someone happens to run out of ammo in the middle of a round, he can go get some! How is this done? Once you see that no more zombies are spawning, the person doing the circles will WALK down the stairs and walk towards the starting room. Once you leave the PhD area, and are far enough, the remaining players can do whatever they want. All you need to do is from the starting room, go upstairs and back outside, then just walk back to the PhD area and start doing circles. The remaining players can do whatever they want. Once they are done, tell them to stay close the the MP5K, and then the circler blows the zombies away. Now the players have 5 seconds to go back to their rooms.

Hope I helped.

A vid would be nice but this does seem like a good way to survive long rounds