Depends on where your staying. Like, if your on 2 towers, there are so many places to hide and set mines its not even funny. Of course, if your on the main zombies, 650 hp is really hard to take down with 3 mines and a rocket ._. Trust me it sucks running and jumping after they get inside. I usually use a gun that has around 250-300 ammo in quarantine so I have something to rely on when my mines and launcher fail to take down the zombie coming in.

Also, I hate noobs that die and watch you and shout out your hiding spot D: It was the only thing I hated