While the Sentinel stronghold is under siege in Doom: The Dark Ages' sixth mission, you're going to have to shirk off your responsibilities as the Doom Slayer for a moment if you want to collect ...

Doom: The Dark Ages is filled with Secrets, consisting of unlockable items and materials needed for upgrading weapons. Some are sat right out in the open, while others involve a bit of searching and ...

You'll need the purple key for several secrets. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.