This is getting a lot harder now. There are too many zombies to contain. Instead, I’m having to keep a few survivors alive in a corner while I try and kill the zombies near them and then work my way outwards, hopefully leaving a fairly safe zone for the humans to wander around in. You’d think they’d hole themselves up in a safe area, but, no, they just wander. Maybe they’re drunk.

The Raging Dead

Things aren't going well, but there's still hope.

It’s sometimes even a good idea to let a zombie run at them. If you can kill the zombie in time then the human will survive, but will be running away from the zombies, not weaving their way towards them. A risky strategy, to be sure, but as long as one human survives, the level’s not over.