no
its single player and multi player.
Single player?
i think it is
you can't without a mod
Yes, in the co-op or single player campagin.
in left 4 dead u can open the console ` or~ and type Z_spawn hunter
Nope and that would be a dumb idea too sorry:(
No. In Left 4 Dead 2 there are no bosses. Witches will spawn in random places on your map usually 1-2 per part.
Left 4 dead, Left 4 dead 2. Zombie apocalypse on the xbox arcade. Call of duty black ops and world at war has a zombie mode. Red dead redemption has a zombie add-on for multilayer and single player
Only if you want to play online with other people otherwise theres a single player with A.I
Nope, you have to be online, or if more then one person is playing you both must be online
If you have the difficulty at a low level you may call a vote to increase it at the pause menu which spawns new zombie to try to kill you