Doom Eternal - E1M1 (full playthrough)

This map is a remake of Doom's first level, Hangar. At this point it's been remade in every Doom game after it, so it was fate that Eternal would get the same treatment eventually. That's not to discredit the map itself however, as it's well-made and fun to play. Using assets from Mars Core, the map author was able to create a pretty and faithful reimagining of the map, featuring detailed lighting, geometry, and interactable doors/switches.

From other videos I've seen, the map is intended to be played alongside a mod that brings back the cut pistol as a starting weapon. Safe to say your fists are useless, and without dashing to headbutt demons for damage, you are defenseless until you grab the shotgun from either the staircase leading up to the combat armor, or from the secret tunnel containing zombies. I played without that mod and was still able to have a relatively normal experience.

Overall, this map is probably the best-made one available from the mod launcher (as of now), not only because of the gameplay and attention to detail, but also because of the inclusion of things like custom music (Andrew Hulshult's IDKFA remix of Hangar played on loop), and an actual ending screen.