not that i know of, however i wouldn't say its necessary on L4D. The sequal ya, i found that expert mode to be pretty much impossible because of the surplus of special zombies they added.
On L4D expert is easily doable, actually that was the default i would play on unless it was versus. Of course having 1 or more friends would help a lot, but i find it easier to play with bots sometimes because they cater to your play style.
* i do remember one glitch, My buddy and I would camp on that rock directly west of the finale house on Death toll. only a few zombies will climb thru the water up the rock, the only opposition you face is the occasional smoker (all tank will glitch and not arrive). So you pretty much just need 1 buddy, and spam LT on each other if you hear a smoker.
Last edited by niko da bos; 12-06-2012 at 09:53 PM.