Subscribe to download
OBO: The Gamemode - Solitude

OBO, pronounced "oboe" (yes, like the instrument), stands for "Overall Balance Overhaul."

This is a gamemode script, which makes many, MANY changes, focused on turning it into a genuine Left 4 Dead 2 solo experience. You will be tense. You will be scared. You could die at literally any time. You are not safe. Special Infected pinners are NOT removed for this gamemode, but they have been heavily edited to make surviving against them all alone possible. For example, Specials have had their healths greatly reduced and their abilities tweaked. Also included are similar quality of life improvements and major gameplay edits as seen in my first gamemode script, Dead World [ https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1147589399 ]. The improved bot AI suite as featured in Dead World are also in this script, in case anyone ever feels the need for a buddy or three. Just keep in mind that this gamemode is uncompromisingly aimed at a solo survival gamebalance, and bots or real-world buddies could potentially harm the intended feel. Still, playing this with a single other real-world friend can be just as harrowing an experience. To kick bots, simply use the in-game console to type "kick [BOT NAME]" without quotes.

WARNING: This gamemode is HARD. The odds are greatly stacked against you, and you may or may not die repeatedly. My advice is to take your time and advance slowly and carefully. You'd rather fight an extra horde where you're in a good place than get caught by fewer hordes where they can easily overwhelm you. And the biggest advice I can give you, do NOT get tunnel vision against Commons. All it takes is a single unnoticed Hunter from behind and it's game over.

HOW TO USE:
This is a gamemode, NOT a mutation. This means that to play with this mod, all you need to do is subscribe to it, and make sure it's ticked in your addon list. If it's unticked, it's completely and 100% safely disabled. If it's ticked, it applies to all matches you host, so long as you host a gametype this mod supports (currently just Co-op).

The complete list of changes is far too long to fit into this page's word limit. To see specifics, read the readme in the below link:
https://pastebin.com/np05zpPB
It's a bit long, but I recommend it anyway.

A note on the preview screenshot:
Disclaimer: I got it randomly off the internet. I am not its author, and I don't claim to own it. If need be, I'll replace it with something generic from Wikipedia or something.