It's not very good, one of zombies have missing texture, none of zombies have destroyable head, there's no texture variations between them, and every zombie have only 1 texture, while it's possible to have up to 4 diffrent random textures on a single model, and some zombie's ragdolls fly away once killed. L4D1 Infected does everyting i said above and one of the greatest addons. This one is mediocre at best. But I'm not saying it does not have potential, just telling there's a huge room for improvement.