AC Valhalla Defensive Measures is one of the quests you can start in Asgard. It’s part of The Fate of the High One mission. You’ll have to find and speak to the Builder who will ask you to bring him several jars to build the barrier. We have to warn players that this quest is bugged, and most of the issues happen if you start this mission with low level character.
Bring the jars to the Builder bug solution
Jars can be easily found since they are scattered around huge pillars. Grab a blue jar and place them on the ground near the Builder. Some players reported a bug during this part of the quest. When they place the jars near the builder nothing happens. The only solution to this bug is to reload the save.
Kill all invaders bug
Once you locate Jotnar patrol northwest of your location, you should bring invaders into the shield. But the shield is unstable, and it will start flickering. In that moment Invaders will be passing through the shield, and you have to defeat them all. The main issue here is that the player character also receives constant damage if you leave the circle. So, if your character is not strong enough because your level is too low, if you leave the circle and spawn on any other location your character will die. The developers are aware of this issue, and we are waiting for any updates.
Another problem with this quest is that enemies could go through the shield even if it’s green again, and there is no ending cutscene. Solution we found for this bug is to switch the game to English, or any other language, load the last save that doesn’t contain words “Defensive measures” and redo the quest. After the attack, an option will appear to speak to the Builder.
If you need help with anything else in the game, we've got a metric ton of other guides for you to check out. For example, we've written AC Valhalla Hidden Ones Armor Set Locations - Ratae Bureau Armor & Londinium Bureau Key for quest A Brief History of The Hidden Ones, that will reward you with the Hidden Ones armor. We can also help with whether you want to let Rued Live or Die - Kill or Spare Rued Choice Consequences, or who to give silver to in AC Valhalla War Weary quest , and a well hidden AC Valhalla Comb location for Bil Maiden's Missive Rygjafylke World Event. Puzzle that caused us big problems was Unseal The Well during the quest Well Traveled. And, yes, we do have many more coming, stay tuned.