Installation:

1. Locate your Assassin's Creed Valhalla folder 
-Usually something like this C:/Ubisoft/Ubisoft Game Launcher/games/Assassin's Creed Valhalla/
-You can find this by clicking the game in Ubisoft connect, then go to properties and local files
2. Paste the "videos" folder into the "Assassin's Creed Valhalla"
3. Replace the 6 files when prompted
4. Launch the game and enjoy!

Unistallation:
Delete all the files included in this download from your "Assassin's Creed Valhalla" folder and verify files in Ubisoft Connect

Disclaimer:
I am in no way responsible for your game breaking! This should not be happening anyway since this only replaces the startup videos with less than a second long videos.
Use at your own risk