I finished DOOM (2016) and DOOM Eternal. Eternal is definitely the better of the two for me, maybe even my favorite in the whole series.
Eternal's campaign was pretty easy this time, since I actually used all of the tools the game gives you. Some of the Master Levels were harder though, especially Taras Nabad. Two fights in that level took me an hour each on Ultra-Violence.
Now I'll play the DLC for the first time.
The base game is supposed to have all DLC, that was previously released, original Horse Armor included.
The Deluxe Edition is new Horse Armor and other cosmetic stuff, that is unlocked by these exclusive quests.