Pros:

This mod makes you more comfortable with killing zombies and that makes L4D2 much funnier and adds it some differences for those who are tired of playing regular Minecraft or regular L4D2.

Cons:

I couldn't realize why Hulk fails to load and I am guessing this is not only my problem because I asked a friend to install it and he had the same error.

Conclusion:

A much different way to play L4D2. Recommended for those who like Minecraft but are tired of crafting their weapons.