Time to be awesome!

If you play Left4Dead and you feel Expert is too easy, you can check out my Challenge server. More zombies, more specials often, with some balancing.

L4D1: https://www.gametracker.com/server_info/108.61.238.70:27015/
Use in developer console to force lobby to connect: mm_dedicated_force_servers 108.61.238.70:27015