awesome campaign

This campaign is tough as shit, you need a solid team i you wanna push through it on expert. Since i have plenty of things to say ill break down each level....
level 1: good, Steady introduction followed by a long highway section, i dig it.
level 2: this level is pretty wacky, the whole inside the store section is super long but its not impossible with a decent team.
level 3: long af, i like this level but i drags on quite a while and the crescendo event at the airplanes can get nasty (save bile for this section) nuff said
level 4: I like it, a cool suburban area with a spoopy atmosphere, its fits l4d2 perfectly
level 5: Huge fan of Rush-to-the-End finale so it gets 2 thumbs up from me

Environments: 10
Difficulty balance: 8.5 
Length: 9 (a little bit too long)
Finale: 9