I called it in the official Left 4 Dead 2 thread (Complete a campaign using only melee weapons)
Its a shame my guitar one didn't come true 
And whats all this about a bile bomb? WOW, Turn the infected against Tanks or even Boomers themselves? AWESOME.
Lastly.......... Honk a clowns nose........ ha ha ha
10/10 achievement list by Valve.







