Talk:Invisible GM/@comment-4536690-20130713151158/@comment-7395018-20130713160108

They are usually in place not normally shootable by normal means.

One of the few exceptions is the one in the corner beside the basement door in Cabin Fever. There is a glitch with that GM as well. Stand behind it in a certain position and the infected cannot hit you. You can be banned for this glitch.