Despite being one of the earliest side quests you're given in Valor Mortis, Oathbound is one that you won't actually be able to finish until much farther towards the end of the game.

After defeating your first Eternal Guard, you'll be tasked with collecting a total of 7 Emblems from each of the elite soldiers. While several of these Guards will offer powerful Amber in exchange for defeating them, completing the quest also offers some worthwhile goodies and an exclusive achievement as well.

You'll be able to find an Eternal Guard in 7 unique chapters of Valor Mortis, all of which are marked by a chalk drawing of a triangle with an infinity sign beneath it. While you can come across them naturally by keeping an eye out when exploring, several of them require backtracking with future abilities.

While the first time you'll encounter an Eternal Guard is likely Lucien Lafontaine, there is actually one earlier on that you can find if you return to Onslaught Arch at the Battlefield.

You can check your progress to see which Guards you are missing through the Oathbound tab of the side quest menu.

Even though you can technically find Valen Duroc earlier, I would recommend coming back here when you have some better gear, as facing one this early on can be more trouble than it's worth, even with the large XP gains.

After unlocking the pistol , fast-travel to this lantern and follow the original path in the opposite direction, crossing the branches and ledges until you reach the other side of the bridge.

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