There are tons of quests in Shadow of the Erdtree, most of which are cryptic and hard to follow. Locking yourself out of their progress is also a problem for many players, so here are all the quests in the Elden Ring DLC and how to not miss them.
Shadow Of The Erdtree: All Quests In Order (Complete Guide To Missable Content)
Many of the quests in Elden Ring: Shadow of the Erdtree are intertwined and tied to a single event in the game that cannot be completed until the quests have been progressed far enough. Doing so will lock you out and require you to go to NG+ to try them again.
Here are all the assignments and advice to avoid locking yourself out:
Don't forget to complete as many missions as possible before fighting Messmer the Impaler and setting fire to the Seal Tree.