Pros:

-Amazing texture
-Real atmosphere of Silent Hill
-Mirror scene
-Sound are perfectly put in game
-Bots are not very buggy
-Story with l4d1 survivors
-DAT FOG!

Cons:

-Some objects(weapons,pills....) are a bit buggy but we can take them

Conclusion:

I play this campaign 15 times and I love it!I hope the next will be Amazing too!