A standard feature of genre fantasy, isekai, and the LitRPG genre is that everything is run by guilds.

But these aren't guilds ... right?

The winter holiday celebrated in Terrasquestone and Tir Lauchmhar

The Brotherhood is an elite and incredibly secretive organization that has been a force of frightening martial power, and exists independent of any and all guilds, noble houses, or other military organizations. They are known to be few in number, terrifying in combat, and answer to no man, no lord, no god, but their own conscience.

There are outstanding rewards for anyone who is able to unmask an Ash Brother or determine anything who they are or where they come from.

This is compounded in difficulty because the Brotherhood is zealously Good in alignment and only monsters, tyrants, and criminals find out how good they are at fighting.

7 taxidermy tableauxs in Terrasquestone, these move around on their own accord and can be found in many different places. The Docent Majoris moves them as it sees fit.

One of the Four Divine Guardians, Beast God Antihero exists to hunt, defeat, and consume would be heroes. It steals power from those it slaughters and consumes. 

Mythical creatures associated with Terrasquestone

7 human-goblin relationships for the DungeonVerse, ala Huge Goblin Knocker and where to find them

Carcohl is only known of through mnemaglyphs found in the deepest portions of the Gygaxian Gyre. If the scratchings in the walls can be believed, Carcohl or The Carcohl is a dragon snail of Gargantuan size

A transient inn sometimes found in the Gygaxian Gyre

One of the most prestigious, opulent, and exclusive bath houses in Terrasquestone

Located in the innermost wall of Terrasquestone, Tonberry tower is a popular residence for ranking non-noble guild officers, academy administrators, and other upper level non-combat NPCs

Some NPCs for Terrasquestone and to bump the Vietnamese spam posters off the main page

The Gygaxian Gyre is a deep and vast place, and the Perrenian Necrohol is one of the zones of the dungeon that almost all explorers lucky enough to survive the Gyre proper are introduced to

Orthran are rare encounters in the Gygaxian Gyre, and are accorded a status of being a dungeon cryptid.

Sure, sure, mate, you're seen one, and slew it, and magically survived to come back and tell us about it. You're a con and a swindler but your story was at least entertaining.

The Wightish counterpart to Terrasquestone, the inverse of the great citadel, and the great fortress of the Gyre

I tried to cover this information in some sort of fluff format, but hit the wall of it's not important in that manner, so just barreling ahead

A highly respected martial combat school in Terrasquestone

The Victorious Charm, or Charm of Victory is an enchantment added to weapons

The Bubble Charm is a protective enchantment added to an accessory such as a ring, gorget, necklace, belt, sash, bracelet, or other such item.

30 Loot Items for the Gygaxian Gyre, Understone, and maybe the shops in Terrasquestone