This plugin changes the Max Health of the players.
Tested to work on L4D but it looks like it could run on any source engine.
Source created by Bl4nk, modded by me, kept Bl4nk's name as the Author.
Cvars
sm_maxhealth
-usage sm_maxhealth 900
Bugs:
This will interfere with L4D Survivor Upgrade Mod, so to fix that go in
left4dead\cfg\sourcemod
edit survivor_upgrades.cfg so that hot meals is set to 0.
(once a member receives "hot meal" their new health will turn to 150)