"One Step Closer" is one of the bi-weekly Archaeology quests offered in the Legion expansion. To see the cycle of quests, check the Surveying the Land / This Side Up / A Keen Eye achievement. You will need a Legion Archaeology skill level of 1 in order for Dariness the Learned, who can be found in the Things of the Past Archaeology shop of northern Dalaran, to receive this quest. Note that you will have 2 weeks from when this quest became available to complete this quest line, otherwise your progress will be lost. For "One Step Closer," head to southwestern Suramar (may be easiest just to fly to the Felblaze Ingress of northeastern Azsuna), on a cliff west of Felsoul Hold, and speak with Brann Bronzebeard. Turn in the quest, then accept "Deciphering Demonology." "Deciphering Demonology" will require you to obtain 5 Recovered Artifacts and 5 Chamber Key Fragments. Chamber Key Fragments are quest items that can be obtained from successful surveys at digsites found around Suramar. They can also be obtained from Wyrmtongue Collectors with a 100% drop chance; these enemies can randomly attack you upon a successful survey. Recovered Artifacts are items that have use outside of this quest, and thus, if you have some before accepting this quest, they can be used for this quest's completion. In order to obtain these items, you will need to obtain Demonic Archaeology Fragments from digsites in Suramar. You can then use the Archaeology skill to solve Demonic Relics; once you solve for an item, right-click that item in your inventory to turn it into a Recovered Artifact. Outside of this quest, these can be exchanged with Dariness the Learned for fragments from past expansions' archaeology categories. You can also obtain Marks of the Deceiver, which can act as substitutes for Demonic Archaeology Fragments to more easily solve relics. Once you have 5 of both quests items, return to Brann Bronzebeard. Turn in the quest and then accept "Dark Secrets." Once you accept this quest, Brann will run off. Meet him outside of Kel'balor in the Crimson Thicket of northeastern Suramar. Speak with him and let him know you are ready to enter; he will then follow you (not an escort). Take him to the northern-most room; after a few seconds, you will be attacked by a Catacombs Guardian that you must defeat. Once defeated, you can loot both Nightborne Artifact Caches in the room to obtain the quest items for "Dark Secrets." The second is guarded by lasers, so time you movement to avoid taking massive damage from said lasers. Turn in the quest to receive the epic Blood of Young Mannoroth item, which can be broken at the Obliterum Forge in northern Dalaran in exchange for Obliterum and Obliterum Fragments. These items are used to upgrade the item level of crafted Legion epic gear. Completion of this quest will also give you progress for the A Keen Eye achievement (or its previous forms, including This Side Up). This Side Up is an important achievement because it is required to unlock one of your artifact appearance color variations.
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