It's not clear at this time what the DLC looks like, but DOOM Eternal received two DLC expansions with the Ancient Gods Part 1 and Part 2, so we could see something similar for DOOM: The Dark Ages.

Doom: The Dark Ages serves as a prequel to 2016's Doom and its sequel Doom Eternal, and tells the "epic cinematic origin story of the Doom Slayer's rage". But, even though it's a prequel ...

Right now, you can grab the Premium Edition of DOOM: The Dark Ages for $88.49 via CDKeys on Windows PC, an 11% ... DOOM Eternal's DLC was split across two packes, with The Ancient Gods Part ...