Doom Eternal - 100% Ultra Nightmare: Arc Complex

The Arc Complex level from Doom Eternal played on Ultra Nightmare with all collectibles, encounters and challenges. This is my 2nd favorite level in the game (aside from one of the DLC levels). It's probably the longest level in the game, a bit ahead of Cultist Base, but in this case the encounters are fun and you have basically of your weapons and upgrades. Also it features the most infamous enemy in the game so that's cool.