You only need ONE flask, not 3. There are just three areas to find it.I have been looking for the “deadly concoctions” for the Fatal Flask quest for an HOUR. They are nowhere to be found. The fact that all of these quest items only show up when you are right on top of them, in a zone where mobs can absolutely wreck you, is super frustrating. You run around trying to avoid the mobs just to complete a fetch quest with a trash reward.
I can confirm that this quest, the "Fatal Flask" in the Parch, Night Market, is bugged. I spent more than 1 hour in the western side of the Parch trying to locate the first flask, to no avail. I then decided to move to the eastern side, and found a flask very easily, I was immediately spotted by enemies though, who killed me. When I spawned back at the top of the roof, the quest had been automatically updated as "completed", thus giving me the missing achievement.
To clarify: the potion in the western part of the Parch was nowhere to be found, and of the 2 other ones in the eastern side of the Parch, it was enough for me to find only one for the quest to be marked as completed.
Clearly bugged.
I found the 'Not a magicka potion' concoction in the back of this building with 3 arches, just south of the northern platform in the Parch
… I spent more than 1 hour in the western side of the Parch trying to locate the first flask, to no avail. I then decided to move to the eastern side, and found a flask very easily, I was immediately spotted by enemies though, who killed me. When I spawned back at the top of the roof, the quest had been automatically updated as "completed", thus giving me the missing achievement.
To clarify: the potion in the western part of the Parch was nowhere to be found, and of the 2 other ones in the eastern side of the Parch, it was enough for me to find only one for the quest to be marked as completed.
Clearly bugged.