Doom: Hell Followed Review (platypuscity)
I would recommend this DLC to anyone who enjoys playing multiplayer relatively often, it includes a plethora of customizables, the Cacodemon, a new weapon, and several muliplayer.
The armor appearances, colors, and patterns you get from the DLC are, in my opinion, the coolest of any DLC, and the Cacodemon, while requiring more skill than other demons, such as the Baron or Revenant, is fun to play.
I think the price tag is a little high, but justified. The game already includes a full length singleplayer, amazing multiplayer, and open source map creator, and I think the high price of DLC is a way to offset the cost of making such amazing, polished content.
If you enjoy playing multiplayer alot, and only want to buy one of the DLC's, buy this one.