I have the same problem! I wasn't a high enough level when I was attempting the shield mission with the builder so I left and went back to England. When I came back a good few hours game play later I was slowly dying when spawning there and it is impossible to get passed this. The game still thinks you're in that mission when you go back to Asgard and because you're outside the shield when the game loads you there you start to loose health. Please Ubisoft update the game to fix this or be able to restart the mission it's a nightmare.

I have the same problem! I wasn't a high enough level when I was attempting the shield mission with the builder so I left and went back to England. When I came back a good few hours game play later I was slowly dying when spawning there and it is impossible to get passed this. The game still thinks you're in that mission when you go back to Asgard and because you're outside the shield when the game loads you there you start to loose health. Please Ubisoft update the game to fix this or be able to restart the mission it's a nightmare.