This might be soun d like a reviewish thing but i'll do it anyway.
Objectives are simple: you have to find the letters to spell WHOLEGRAIN (Not in order) in order to progress in the objective. After you got all the letters, you will jump in the pipe (It will activate the other zombie spawn) and you have to wait two minute until the door opens. Once you touch the door, the survivors will win instantly.
Pros:
The map is quite entertaining.
Lets you explore around to find the letters.
Fun.
Quite a 50/50 for survivors and zombies I guess.
Cons:
A little glitchy.
After the second/final objective is activated, it is possible that a few zombies will get stuck at the spawn. (You will be forced to type 'Kill' in console)
Verdict: Pretty good, I guess. I might give it between 7 and 9.
(Well I know its not a review thing but I kinda felt like it so... yeah. Don't be mad at me Claire!>_<)
the major downside to this map is humans stay on higher level and just camp for 20 minutes or until they run out of ammo. Total fragwhore map. Its a lot of fun if your human, it sucks if your zombie.
if someone added like poison gas that kills higher level like 3 minutes into map, it might be pretty fun.