just so you're aware, if you care, someone modified and re-uploaded this.
https://steamproxy.net/sharedfiles/filedetails/?id=2814763009

A couple missing textures in the beginning and end, the end was, a little easy. It's very open and there are spots the tanks can get stuck, essentially making the whole thing easy as hell. Overall though, it looks amazing, the pacing was good, you nailed the aesthetics. I had fun.

amazing

Thank you :D

This mod contained custom infected texture that replaces Jimmy Gibbs texture, and it causes a strange blue-tinted glitch on Jimmy Gibbs when you play other maps. Author, if you seem this, please remove that Jimmy Gibbs texture from this VPKs, you could have it included in a separate addon, the map should not have anything that replaces something in the original game files

cant play further than second map, its bugged

One or more of your maps is missing a stringtable dictionary causing them to crash the server when someone joins a game. Let me know if you don't know how to fix it.

░░░░░▄▄▄░░▄██▄░░░
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░░░▌░▄▄▄▐▌▀▀▀░░ THIS IS BOB
▄░▐░░░▄▄░█░▀▀ ░░
▀█▌░░░▄░▀█▀░▀ ░░ COPY AND PASTE HIM,
░░░░░░░▄▄▐▌▄▄░░░ SO HE CAN TAKE
░░░░░░░▀███▀█░▄░░ OVER THE WORKSHOP
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░░░░░▐▌░░░░░░░░░█ you got it

GAMEPLAY FULL CAMPAIGN EXPERT REALISM https://www.youtube.com/watch?v=T1W5N-iBPbc

I CAN'T PLAY THIS! due to part 1 & 3 being missing author fix please & thank you

Part 2 and 3 has got single player and part 1 and 4 hasn't, are all the parts single player or not?