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Improved L4D1 Mutation

That mutation improves the L4D1 Mutation of Valve. It removes the common infected such as Workers, Mudmen, Clowns, Jimmy Gibbs etc. It boosts too the Tank speed. It is faster than before now. All the L4D2 weapons and infected are gone too. It still needs improvement. If you know the cvar for the Friendly Fire while incapped, the water sprint speed, the reload style of L4D1, let me know.
It is recommended to play it with all custom campaign or maps off. I found that there could be problem with the tank speed.

Special thanks to Black★Rock Shooter, Ene_Chan, Exsau, ilovemytruesister, Lyecxi and Spike for the help especially with the test of the mutation.

Enjoy.