
I went back to check. In chapter 19, MC mentioned that the dump guild is the worst criminal organisation and one of the factors that accelerated the end of days (I guess that means the apocalypse through worldwide dungeon breaks). Later on, after that ares guildmaster died, there's a short "appearance" of the dump guild's high ranking members, but they didn't mention anything about their goal, just that that guy's death doesn't affect their main goal, whatever that is.
This is just a speculation but I think this guild probably is a cult that worship the creatures from the breaks, such as Fafnir (chapter One monster that killed MC's previous life) and aimed for world destruction/reconstruction or something. I mean, that's what usually what the main villains head towards in these kinda setting. That or some of the member, probably guild leader, is a devil or something.
So maybe he said that at the beginning and I just forgot but what exactly is the dump guild goal?
Is it world destruction? World domination? I'm a bit confused XD