Alright. So I've played this game for about 80 minutes and never actually made it to a safehouse or anything. I can tell you that the game is just bland, slow, and not fun to play. If you see 2 zombies and you don't have a weapon, you're kinda ♥♥♥♥ed. If you see 3 zombies with a medicore weapon, you're still a bit screwed. Overall, I'd give the game a 3/10 and I would absolutely NOT play this game ever again.
UPDATE: I gave it another chance, and I'd have to say that it's somewhat fun with friends. It's bit of a bore and the game does have faults, but I'd have to give it a 4/10 now.