basebuilder Difficulty system
Humans emerge victorious at the end of the round, and the difficulty increases.
As the difficulty increases, so does the zombie's health, gravity, and speed
On higher difficulty, zombies can also pass through teammates.
The human build time also increases with difficulty
This isn't my plugin, I just added the settings for zombie health, gravity, and speed
add g_Difficulty = g_iTeamPass to public logevent_round_start()
basebuilder65 from https://forums.alliedmods.net/showthread.php?p=1198524