Few notes to help you go through the campaign:

1) There are a few known bugs at this point and i will lay them out:
* Survivor bots may act up at times. not want to jump on the lift, not want to stand where they should, follow you, etc. i strongly recommend everyone to play this beta with live human beings as oppose to bots. so they can enjoy the game and get a real sense of the flow of the levels.

* Few bugs here and there i'm aware of:
- Coming out of the beginning Saferoom there is an alarm door. it's buggy and may show up as jittering or break and fail to open.

- a Tank may spawn right behind the main drainage gate, right before the crescendo.

- Witches may spawn outside of the survivors path. some may like the idea but it's not by design lol.

- In the Hotel crescendo, the janitor's lift may not work for some odd reason i'm still looking into this. (in all my playtests it's worked fine but i've received feedbacks from few people who said it didn't. they may have been running on a modded server but anyway...)

- Playing on modded servers or with strange cheats / hacks / rates abnormalities is out of my range and i cannot guaranty the campaign will perform as it should. i also don't intend to. I don't see why people should use buggy mods and plugins on an already perfectly balanced game. I'm aware not everyone share my view on this but in any event, any and all mods used these days in L4D are buggy and are not recommended or supported by Valve. If you are running a modded server or playing on one - be warned. the game may be off.

- You may occasionally find the off zombie not being able to go through an opening, a door, window, etc. - please be kind and take a screenshot of the area where you saw the bug happen. same goes for any other bugs you may encounter.

- Visuals: You may see at times a strange flickering or disappearing elements in the map. They are known and i'm working to sort them all out as soon as i can.

- Versus and Survival aren't yet fixed. Please be patient, they'll come.

2) Until proper Instructor messages are added (in upcoming update) i will explain the Finale:

You arrive at the generator area. start it. it will fail after 2 min, start it again and then run over to the HQ shack (green shack) where the radio is. call the APC and defend yourself until you HEAR the APC arrive (motor roaring, skid sounds and of course, the Horn). it will park and wait for you right by the generator forcing you to run back there.

I've planned it this way because there are enough campaigns out there where you can simply sit and camp the entire Finale waiting for the rescue to arrive. i find it boring and i'm not the only one. Without a proper way of implementing real gauntlets in L4D1 this is the best i could come up with. I'd like to think it's more challenging and rewarding. and more fun than the usual "camp-holdout" Finales.

With much respect to other community mappers i would argue that as we can all see in L4D2, this idea is already the current standard anyway in Valve's campaigns. Listen to the commentary around the crescendo as well as in the Finale in The Parish.

That being said, i'm very open to ideas and any inputs - please share your thoughts and comments. it will only make Dead Echo better.

thanks,
val