Assassin’s Creed Valhalla Rats Be Gone Mystery Guide

A complete collection of Assassin’s Creed Valhalla guides for the trickiest World Events, Mysteries, Collectibles, and more—everything you need to know about the latest Assassin’s Creed video game. AC Valhalla is a 2020 action role-playing video game developed by Ubisoft Montreal and published by Ubisoft.

The game was released on November 10, 2020, for PC, PlayStation 4, Xbox One, Xbox Series X and Series S, and Stadia, while the PlayStation 5 version was released on November 12. It was followed by Assassin’s Creed Mirage, released on October 5, 2023.

World Events (Mysteries):

Offering Altars: 

Flyting Duels:

Roman Artifacts:

Books Of Knowledge:

Fly Agarics Mysteries: 

Hoard Map Treasures:

Gear Locations:

Ingot Locations:

Tips & Tricks: 

Ostara Festival Guides:

Wrath of the Druids DLC Guides:

Sigrblot Festival Guides:

Siege Of Paris DLC Guides:

Crossover Stories DLC Guides:

Dawn Of Ragnarok DLC Guides:

Updated November 21, 2023

Just north of Assassin’s Creed Valhalla Grantebridge village in Grantebridgescire, you may stumble upon a desperate farmer looking for help to eliminate the rats that constantly eat his crops. You can hear this Anglo-Saxon farmer when nearby, and if you manage to help the poor fellow, you’ll complete another World Event or Mystery.

This is a good thing, considering that you’ll get a lot of XP for a rather short task. This Assassin’s Creed Valhalla Grantebridgescire World Event is named The Doom Book of Cats, and just like the Ledecestrescire Sauce we have discussed earlier, it’s really easy to complete, but there is a small trick here. First, let’s see where you can find it.

AC Valhalla The Doom Book of Cats World Event Location

The quest-giver or the farmer is located just north of Grantebridgescire, as you can see on my map below. You’ll find him by the road close to an old, relatively crazy woman who is sending everybody away from his house. We’ll get to her in a moment.

Assassin’s Creed Valhalla Rat Farmer Mystery

For now, focus on finding NPC and talking to him. As he reveals, the rats constantly eat his crops, and he needs your help removing them. He also tells you that he tried everything but had no luck. So, your task here is simple. Kill the rats and help the farmer.

But how do you do that, because if you check the farm, you can scare the rats, but you can’t shoot them, and you can’t do…well…anything. Interesting right? Here is what you need to do.

How To Kill the Grantebridgescire Rats

First, you should stop running after those pesky rats because that’s not the way to tackle this Mystery. Instead, you’ll need to look for some cats. And these cats are nearby, specifically inside the woman’s house. So, head down the road and talk to her. She’s the one in the following screenshot.

Assassin’s Creed Valhalla Doom Book Of Cats Guide

After a short dialogue with only one choice, you’ll get the House of Cats Door Key, which allows you to enter the locked house behind the old woman. Inside, you’ll find several cats and some loot.

You don’t have to interact with the cats, though, but make sure you loot everything (including the Opal), and if you want, you can also read The Proclamation for Those Who Love Cats. Now that you have released the felines, just head back to the farmer, and this Mystery World Event is marked as completed.

A complete collection of Assassin’s Creed Valhalla guides for the trickiest World Events, Mysteries, Collectibles, and more—everything you need to know about the latest Assassin’s Creed video game. AC Valhalla is a 2020 action role-playing video game developed by Ubisoft Montreal and published by Ubisoft.

The game was released on November 10, 2020, for PC, PlayStation 4, Xbox One, Xbox Series X and Series S, and Stadia, while the PlayStation 5 version was released on November 12. It was followed by Assassin’s Creed Mirage, released on October 5, 2023.

World Events (Mysteries):

Offering Altars: 

Flyting Duels:

Roman Artifacts:

Books Of Knowledge:

Fly Agarics Mysteries: 

Hoard Map Treasures:

Gear Locations:

Ingot Locations:

Tips & Tricks: 

Ostara Festival Guides:

Wrath of the Druids DLC Guides:

Sigrblot Festival Guides:

Siege Of Paris DLC Guides:

Crossover Stories DLC Guides:

Dawn Of Ragnarok DLC Guides:

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Vlad Susanu
Written by
Vlad Susanu

Founder and Senior Content Producer at GameClubz, Vlad is the former CEO of VGFAQ.com and Primewikis.com. He's been playing video games since 1994 and likes keeping up with the latest releases, increasing his collection of PlayStation trophies daily.

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