All Mission Challenges in Doom The Dark Ages Completing challenges in the various chapters will reward you with various items, including weapon skins, gold, as well as rubies.

A comprehensive list of all of the challenges and chapters in DOOM: The Dark Ages, as well as the rewards for completing the former.

With a whopping 22 chapters to beat, the Doom The Dark Ages missions list is by far the largest of the rebooted FPS series so far.