Okay first off, thank you for ignoring people's feedback(That includes me) about fixing the unoptimization issue.
I'm really impressed how map developers just ignore people's feedback about optimizing their maps.

Let's say you guys are game developer. Do you guys really thought visual(such as graphic and music) could make the game awesome? If you thought about focusing on graphic, you are wrong.
First off, as we said before, map is really unoptimized and you guys are just ignoring it. Even the default L4D2 campaigns did not had any optimization issue since L4D Team focused on performance when making their games.
Second, this map has many zombie spawn rate and it makes game really hard without playing with at least 2 and more players. I failed to escape with 3 bots since they have worst AI.
Third, why is that the item spawn rate is lower than usual campaigns? They are really hard to find at least pills or first aid kit.
Fourth, why the map is too long? It takes at least 7~10 minutes to complete one chapter. At least this map is better than Dark Wood, which had complex maps and very long maps.
And finally, the puzzles. Why would you include the puzzles? Even L4D2 campaign has easier to find the maps. With larger maps, this makes the campaign much harder.

These problems shows what happen if they only care about graphics and not gameplay.
Thank you for reading this feedback and review. My overall score is 1.6/5.