How do you get the thunder gun glich?

Answer 1

if your talking about the thunder gun in campaign mode, than listen to this. 1st go the mission called "numbers". then, after u interrogate clark and the people attack u, throw all ur grenades at the nova 6 tanks. 3rd, turn around and go the place behind the shelf. there is a tape recorder there, press "x" to take the tape out. there will be no indication of u taking the tape. (if u look closely u can see the tape disappearing when u press "x"). sometimes the tape recorder wont be open. if it doesnt then try again. after u got the tape, run to the room with all of the guns on the wall. there will be another tape recorder to ur left. go up to it and press "x". (u will be able to see the tape go into the tape recorder and close. a few seconds later u will hear a distant explosion and the thunder gun will come out of the wall in front of u. have fun