Discover all collectibles in Doom The Dark Ages Chapter 4 Sentinel Barracks, including toys, skins, codex, sigils, and resources.

Chapter 4 in Doom The Dark Ages, titled Sentinel Barracks, places you in a heavily guarded zone pulsing with non-stop threats. You’re answering a distress signal and sent to recover the Heart of Argent. The objective is clear. You have to secure the barracks and eliminate all hostiles. The layout is dense, with enemy ambushes and destructible paths hiding valuable items.
Every collectible in this chapter adds either to your lore knowledge or strengthens your survivability. Here’s a walkthrough-style guide to help you collect everything in this chapter, one step at a time.
Collectibles in Doom The Dark Ages Chapter 4 (Sentinel Barracks)
Toy

You will come across a corridor lined with Shield Soldiers and a tough Mancubus. That section leads to your first secret area. As you move past them, keep an eye out for a wooden barrier to the left. Smash through it using your shield charge. The path will drop down, and you will land near some gold and the Hell Knight Toy. This one’s placed quite early—don’t breeze past it.
Codex
After crossing the larger halls and dealing with the more intense waves, you will reach the Sentinel Shrine. Stay on the left side of this section. Before the Vagary Champion appears, spot a wooden barrier near the shrine. Break through it and collect the Sentinel Barracks Codex. There’s also a gold trail nearby, so don’t forget to grab it.
Life Sigils
The first Life Sigil is located after you take down several Hell Knights. Look for a switch-operated door on the left side of the hall. Inside, you will find a gold trail and, floating nearby, the Life Sigil.
The second one takes a little platforming. In the lower left part of the Mancubus Leader zone, look across a wide gap. Jump, climb to the top, and you will spot it.
Weapon Skin
Later in Doom The Dark Ages Chapter 4, as you push toward the last waves of demons, you will meet a group of Lost Souls. After dealing with them, go up the right-side staircase. Refugees will be gathered nearby. This leads you to a tucked-away zone that hides the Nightmare Accelerator Skin.
Demonic Essence

Once you beat the Mancubus Leader after a shield recall and bridge jump, you will receive the Demonic Essence – Armor. This item boosts your maximum armor, making it a helpful mid-chapter upgrade.
Resources in Doom The Dark Ages Chapter 4 Sentinel Barracks
You will find the resources in Doom The Dark Ages Chapter 4 in both the main and hidden paths. They include gold trails, caches, and rubies that support your progress through intense encounters.

- Gold Trail 1
- It lies close to the Hell Knight Toy in the right section of the barracks. This is one of the earliest finds.
- Gold Trail 2
- This is positioned at the green platform zone. Move to the lift’s left, shield-jump across, and the trail appears ahead.
- Gold Cache 1
- Access it by breaking a metal crate in the same green platform area. Climb up and look left.
- Gold Trail 3
- Find it near the first Life Sigil. Activate a nearby switch, follow the glowing path, and it will lead you there.
- Ruby 1
- It is positioned right before the Atlan hangar, on the main story path before receiving the Impaler weapon.
- Gold Trail 4
- It is found near the second Life Sigil. Jump over a wide chasm and follow the gold pieces on the upper path.
- Ruby 2 and Gold Trail 5
- These come after a broken bridge. Turn around, head into the distance, and pass through projectiles to collect both.
- Gold Cache 2
- It sits atop a broken tower. Go right from the central ruins. Two Nightmare Imp Stalkers guard it.
- Gold Trail 6
- It is found beside the weapon skin. From the base of the staircase, follow the refugees and look along the rising path.
- Gold Trail 7
- It is hidden beneath old wooden carriages. Just before your boss encounter, take a moment to search this final resting spot.
Make sure to scan areas after every major fight in Doom The Dark Ages Chapter 4. Many of these are positioned in spots you may rush past during combat.

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