Great but tough

Already posted a comment, now review.
First, I'd say in a scale of 1-10, 10 being the toughest, this would most likely be an 8. (server aside). Game play was fluid with no real objects placed for hang-ups. Clear directions, and if playing in open spaces the horizon was clearly seen with notable way points. Timed hordes with no real trigger, well, that makes exploring difficult. Not really big on that idea, but no real ding due to the fact that there always was a reward found, (just be quick about it ;) ) Tanks, wow, yea, a lot. Because I tend to play a lot of L4D2 and not always having someone to have a go with, this map can be VERY hard to play with bots. That is probably my biggest hit on this map. (-.50) IMO one should be able to make it to the safe house with 1 health remaining and I really struggled with that on this campaign. From safe room to safe room is not that far but you will have your day to contend with on your way. 6?-7? maps that are actually short, but for the challenges in between it will seem longer ;). No crashes or ctd's and I run 50 or so mods at a time. That's a good thing. Stable. Nicely done. No lag, plus again. Ever changing environment. Plus. Only other real problem I found and it seems to be intermittent is the second safe room. Sometimes your party will be split into two groups with one party outside and that is surely death being as to is taking place at that time in the campaign. (no spoilers). (-.50) Perhaps the author can look at this area to determine what may cause this event.
Otherwise it's a keeper for me. Very cool map. One I'll return again when I need to be brought down from my high horse to make me feel feeble, ;)
I say it again, give it a go, I'm 46 years old, maybe our younger ladies and gentleman can put these zombies to the fire better than I. Cheers!

Fluid and fun

Enjoyed the play. Puzzles had me turned around a few times. Seemed balanced for the most part. Killed good o' Nick with the hydraulic lift, oops. 
Was there a reason for that? The lift? Was expecting to see more in the way of gadgets along the way, and to use them to my benefit. Maybe the idea died. Nonetheless, great job. hope to see more of your hard work. Thank you for sharing.