Pros:

L4D2 campaign downported to L4D1...I love you.
Looks beautiful.
L4D2 tank.

Cons:

Add-on support takes a LONG time to download. Really long.

Conclusion:

What can I say, you guys are reviving L4D1. Somewhat.

Pros:

SLOW-MO
Good Detail
Caves reminded me of HL2Ep2.
Dung pile.
Firefly idea.
M60 at map 2.
L4d1 Survivors

Cons:

L4D1 survivors do nothing
Zoey was standing on thin air, train parts were missing.
Bots got stuck in the lab doors.
Going down the dung slide was slow.

Conclusion:

I've only played the updated first two maps, so there is more to come. But great work so far!

Pros:

Lack of weapons at the start, good concept.
Long. VERY long.
Zombies don't die in electrified water.
Poster looks top-notch.

Cons:

Some areas are a little un-polished.
Bots jump in water before you can hit the switch.

Conclusion:

If this is your first map, then Damn I say, you are pretty good.
Some areas are a little blocky, and then some areas are well optimized.

Hope to see you finish. It would be sad to see all this potential go to waste.

Pros:

Haunted.
Extreme rush when the ghosts appear.
Lots of throwables.
Witch dying crescendo in the first map.

Cons:

Only found 3 types of tier 2 weapons in my playthrough.
Finale a little too easy.
Get to the helicopter on the other side message on the finale.

Conclusion:

A overall awesome campaign, the feel, the structure, everything was just great. Finale was a bit too easy though, just run like hell.
I think it would've been pretty cool to add a boss or something, like hide a saferoom in the woods at the finale.

Pros:

Dark.
Liked the finale area.
Good weapon balance.

Cons:

Smoker ambush on map 1.
Possibly too dark.

Conclusion:

I highly recommend this campaign.

Pros:

Correct survivor order on poster.
Long.
The guitar stands in map 2.
The distress signal finale. Nice touch.

Cons:

Cramped.
Finale was way too hard, specials were everywhere and the tank took too long to come.
The crescendo in map 3, I got three spitters in a row, died, then three smokers in a row.
I'm pretty sure a hotel storage area doesn't lead to sewers, and then the sewers leading to a high school kitchen.
Map 3 could be easily rushed through.

Conclusion:

An ok map, if this is your first time, then good work.

Pros:

The rain effects were cool.
It's for L4D2.
The toxic river.
The exploding saferoom in map 2.

Cons:

Not enough death charges.
I didn't really find any good 25's.
Infected seem to keep coming after the crescendo in the first map.
The room after the giant fan seemed really tight.

Conclusion:

I could never figure out how to beat the finale in L4D1, but I figured it out. Overall, great campaign. Real imporvement over the first. But probably the best moment was going to the exploding saferoom, walk in, and I was like, "Where's the explosion?" Then it exploded and I freaked out. Man, best time ever. Hope you make another campaign soon.

Pros:

Very long.
It's actually better than the Valve campaigns.
The chopper pilot and the guy on the radio. Nice voice acting! Seemed as if it was put into the game.
No glitches in L4D1.

Cons:

In L4D2, you can jump on top of the elevators.
There is a nav problem in the 4th map. Right before you drop down to the train area, the bots get stuck and won't do anything.

Conclusion:

The first and probably the best campaign I've played. Loved the detail. Just make a L4D2 version and it'll be perfect. =D

Pros:

LEGOS.
Weapon placement.

Cons:

Saw a few leaks and such, but nothing special.
Cars weren't made of legos...=(

Conclusion:

If you could only make models so EVERYTHING is made of lego, survivors, items, weapons, and infected, then you deserve a cookie. Seriously.