Looking for Vagabond

To find the Hellion artifact, Resident Evil advises to look for Vagabond, a former Fenrir's apprentice, who was last seen at the Dead City. You should look at the tallest building.
== Walkthrough ==
Climb onto the tallest apartment building in the Dead City. Resident Evil will message you and tell that Vagabond is calling for help in a basement nearby. Look for a private house with a Loner on your minimap, and descend into the basement. Vagabond is there, wounded; give him a medkit and talk to him.
Vagabond wants you to find Fenrir's lair in Dead City, and wait for the target to show up, then kill him, finishing Fenrir's order. Then you get teleported to the surface and receive the task Fenrir's lair at the Dead City.
Here's the full route:
== Notes ==
* Vagabond moves to Skadovsk after this quest.
== Bugs ==
* If you cause Vagabond to spawn by climbing the apartment building, and then leave the location instead of speaking to him, he will disappear after some time, softlocking the quest.