Here’s every location for the Underworld Lore Hunter challenge.
The free Overwatch 2 PvE event, Underworld, has a bunch of challenges that players can complete for in-game rewards. One of these rewards is the Sparkplug Brigitte skin. It requires the completion of eight event challenges. You can gain progress by doing the Lore Hunter challenge. Read on for all of the Lore Hunter locations.

Overwatch 2 Underworld Lore Hunter locations
The Lore Hunter challenge requires you interact with five key areas in the Underworld event map. You need to find the Anti-Omnic Graffiti, Mondatta Memorial, Lucio Record, Underworld Sign, and Lucio Concert Poster, and Underworld Sign.
Anti-Omnic Graffiti location
When you first leave the King's Row sewers, head to the right side instead of the left. Go through the bar and look for a wall that has a sparkling indicator on it. Carefully travel there and press the "F" key to interact with it.

Overwatch 2 Underworld Lore Hunter Mondatta Memorial
Next, the Mondatta Memorial is located in a hidden corner between the tall omnic statue and the bus. Press "F" to interact with it before continuing with the Lore Hunter challenge.

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Underworld Lucio Record
To find the Lucio Record, head to the right of the TS-1 unit. This is the robot you're supposed to be defending against Null Sector's forces. Look for the stairs and telephone box nearby and locate the shiny indicator.

Lucio Concert Poster location
The Lucio Concert Poster is located very close to the Lucio Poster. Head up the stairs and interact with the middle shelf to secure this part of the Lore Hunter challenge.

Overwatch 2 Underworld Sign
Finally, you'll encounter the Underworld Sign naturally as you're escorting the TS-1 unit to its final destination. Look at the wall to your left for the sign, interact with it, and complete the PvE match.

To check your progress for the other Underworld event challenges, simply press "Underworld" in the main menu and press the "Challenges" button.
That's all for now. Are you ready to take on Null Sector? Stay tuned on esports.gg for more Overwatch 2 news, guides, and updates!