Description of map:

There are four sides to the map, Red, Blue, Green, and Yellow, which are surrounding a grassy courtyard with a glass sided building in the center. The building in the center is sealed and cannot be entered. That is where the alpha zombies spawn. Each of the four color sides is split into two rooms.

Description of game:

Humans have about 30 seconds to find a weapon and choose where they want to set up a defense before the zombies come out. The zombies are teleported onto the rooftops, the map becomes just a little bit darker, and a red and a blue lamp post appear to brighten up part of the map. The humans should work together and barricade their doorways with crates and try to survive for the round.

The zombies are not one-shot-kill and neither are the humans. Zombies have 110% damage resistance, normal recharging shields, and deal 75% damage. Humans have 200% damage resistance and normal shields as well, but their shields do not recharge. Two slashes from a zombie will infect a human, so when a human is hit once, he should grab a healthpack, which will reappear every minute inside each room, if possible. Zombie can also use healthpacks of course.

A safe haven will move around from building to building so long as there is a human in each of the four sides. The safe haven provides many benefits and lasts only 30 seconds. The safe haven grants the humans inside extra damage, infinite ammo, and recharging shields. One particular benefit of having infinite ammo is that it will allow you to shoot at a crate to move it without wasting ammo.

TL;DR:
The game is like Township by Somethingggg if you've played it in Halo 3. Keep the door closed at all costs and conserve your ammo. Work together or become one of them! Watch the video below for a better idea of how the game goes.

YouTube - ‪Halo: Reach Infection Map: Romero Plaza‬&rlm;

Thanks to those of you who helped by playing the game with me.