can that been only for l4d1 campaigns?

If you're talking about the L4D1 mutation, it also disables the l4d2 infected. Some people still want the infected.

There's a official mutation where it gets rid of that already?

Not my Deagle :(

Realmente es un excelente mod, las armas como la scar o el rifle militar no me gustan en general ningun arma de l4d2 exepto las melees y las armas clasicas del L4D1

Now we just need a mod that removes the upgrades and boomer bile, plus the adrenaline and what not

When I first read this, I thought it was going to remove every weapon, but it just stick w/the weapons from the 1st game only. Major props.

Hey man thanks