Originally posted by Red Falcon:

So I'm trying to find some levers to pull like setting the server to a difficulty of as if 10 people are in it at all times; or trying to otherwise increase difficulty through other means such as increasing the raid frequency and try to impose more difficulty on the vanilla game by editing options in the code. Though I am not finding much luck yet, so I was wondering if someone has been able to find some way to do that without the use of mods; so that way people can just load in and not have any need or issues trying to install mods and deal with that sort of mess.

There is a function in the game code, that when players are nearby together, all enemies scale up in difficulty, by gaining a 4% buff to their damage resistance per person (Ostensibly an HP increase), but I think it caps at 5 people (20%) If you find that line, you could certainly edit it to whatever value you so desire.