Doom Eternal: The Ancient Gods pt1
It's more Doom Eternal, which depending one your stance on that game is either a recommendation or the opposite. It has all the ups and down of the base game, and while it does bring some new content to the table, it doesn't do anything to shake up the core gameplay loop. Anyway, 3 new levels, 3 new enemies (4 if you count the giant version of the ground tentacle), 1 new boss, but no new weapons or additional functionality for existing ones. The levels are pretty fun, got some nice visual design to them, and should last you about 3-5 hours depending on difficulty and/or secret hunting. The new enemies are imo the worst part of the dlc. The peekaboo'ing eyeball turret and new Maykr type are kind of annoying, since they both have states in which they're completely invulnerable, but manageable.
But the worst is the Spirit, which uses the Summoner model from the first game. It's shtick is possessing other enemies, making them faster, hit harder, seemingly stagger resistant and waaaay bullet spongier. These suck to fight, because once you kill their host you have a limited time to kill the Spirit itself before it possess another one (which will invariably be the toughest thing on the field), which can only be done with one of the alt fires of one specific weapon. Seriously, fuck these things. They are super unfun to fight.
Moving on. Boss fight is fine. Not really fond of how it relies on ads, but that's every boss fight in Eternal. Anyway, plotline is advanced, some revelations are made that will surprise no one who paid attention during the base game, and it all ends in a cliffhanger.