Got to level 9 with just me and my sis last night. Then got to 16 i think it was, with three randoms online who were a bit shit. Ended up being the last person alive for a couple of rounds. Got overwhelmed in the end cause we wernt very organised.

I reckon the best tatics are to let the zombies come in before you kill them on the first two rounds. That way you get more points for killing them inside and get to rebuild the barriers again giving you more points. I also just use the knife at this point to save ammo.

Then for round three and four use your hand gun and knife to take them out as soon as you can.

Now everyone should have quite a few points, so open up the back room and you should be able to have a few goes on the box to get some decent weapons.

Then up to round ten have two in the main room and two in the backroom. Keep playing the box to try and get the best weapons. Shotguns are good upto about round ten then are useless because of reload speed. I like the raygun and browning heavy machine gun.

After round ten i reckon fall back into the back room, have one covering the door , two covering the insde of the room and the last person is there to help when someone gets in trouble or needs to reload.

Whatever happned dont open the stairs up in the backroom. But i reckon maybe opening the ones up in the mainroom before you fall back to the back room might be a good idea. It will give the zombies more choices of entry so might slow them down a bit. havent tried it though.

Does anyone know if you can buy ammo? I couldnt find anywhere and it would be handy so you can keep your two choice weapons rather than having to swap them when they run out of ammo.