The Confederacy of Crunches requires you to play through a campaign without using any guns. (Thus, melee weapons and grenades, only.) Naturally, this means the Boomer is your biggest threat...
This was a somewhat entertaining encounter with one...
Currently, Gigafrosty has 33,017 views for Left 4 Dead 2 across 91 videos. His channel currently has around 11 hours worth of content for Left 4 Dead 2, or 2.68% of the total watchable video on Gigafrosty's YouTube channel.