User blog comment:Jar teh marksman/Map Pack idea?/@comment-201.88.241.132-20110308201418/@comment-3361508-20110308231651

That idea of swimming gave me a totally different idea for a trap. Sort of like the Flogger, but made of ice. There's a chain of them, and either the zombies get spiked, or they fall in the frigid ice, dying.