After dropping on Xbox Game last week, I was able to put some hours in on <em>Doom: The Dark Ages </em>over the weekend, and while it is still generally a fast-paced first-person shooter, one tweak to the formula that came with the prequel that I absolutely love is the shield mechanic. While the Doom Slayer's resilience without it was certainly part of the fun of playing the character, I feel as though the shield actually highlights there being something of a challenge to the new game, and makes for some more intriguing combat strategy compared to the classic run-and-gun of the past.