Doom: The Dark Ages Chapter 4: Sentinel Barracks – All Collectible Locations Guide

Sentinel Barracks is the 4th chapter in Doom: The Dark Ages and features a total of 12 collectible locations, 212 Gold, 3 Ruby upgrades, and 3 Mission Challenges. This guide will walk you through every collectible in Sentinel Barracks to help you reach 100% completion. If you missed anything, you can use Chapter Select to revisit and grab them all.

✅ Chapter 4 Collectible Overview

• Gold: 212
• Rubies: 2
• Demonic Essence – Armor: 1
• Secrets: 6
• Codex Entries: 1
• Collectible Toys: 1
• Weapon Skins: 1
• Mission Challenges: 3

🏆 Chapter 4 Mission Challenges

Mission Challenge #1 – Rip and Tear (50 Gold)

Objective: Kill 40 demons
You’ll complete this naturally as you progress—this one’s unmissable.

Mission Challenge #2 – Plunderer (50 Gold)

Objective: Find 150 Gold
Just follow this guide—you’ll collect more than 150 gold automatically.

Mission Challenge #3 – Prize Fighter (50 Gold)

Objective: Execute a 3-hit melee combo 3 times
Hold 3 melee charges (bottom-right of HUD), then melee larger demons like Mancubi or Hell Knights using R3 three times in a row without killing them too quickly.

🗺️ All Sentinel Barracks Collectible Locations

🔐 Secret #1 + 22 Gold (22/212) + Collectible Toy #1 – Hell Knight

After killing the first Mancubus, ignore the left path briefly. Instead, go forward and enter the room, look left to find 3 gold and a breakable wall. Smash through to find the Hell Knight toy and more gold. Don’t forget to go back for the gold down the stair path afterward.

🔐 Secret #2 + 58 Gold (80/212)

Continue on until you find a green floor button. Before pressing it, look left for a green statue—throw your shield at it to boost up and grab 5 gold. Then drop down and charge through the large crate, climb up for 3 gold and a gold chest inside a hidden area.

💰 4 Gold (84/212)

After opening the door via the floor button, climb the wall and drop into a room. You’ll see 4 gold right in front of you—unmissable.

🔐 Secret #3 + 27 Gold (111/212)

You’ll hit a hallway with red barrels and Hell Knights. Clear the enemies, then look left for a hidden button. Open the door, grab 3 gold, climb up for 3 more, go around for 5, and finally reach the secret room with 16 gold and a life sigil.

💎 Ruby #1

Picked up automatically during story progression—can’t be missed.

🔐 Secret #4 + 5 Gold (116/212)

At the broken bridge, look down left to see 5 gold. Drop down, grab it, then climb up two walls to find another secret area with a life sigil.

🛡️ Demonic Essence – Armor

Earned after defeating the Mancubus Leader near the far side of the broken bridge—automatically rewarded.

🔐 Secret #5 + 20 Gold (136/212) + Ruby #2

Cross the next broken bridge, then turn around and look down. Jump down, grab 8 gold, defeat enemies, and climb up the walls at the back to find Ruby #2. Left of it, collect 4 gold, climb again, and find 8 more gold at the top.

💰 50 Gold (186/212)

Past the broken bridge, go right and up the stairs. In the room at the top, you’ll find a chest with 50 gold.

🔐 Secret #6 + 5 Gold (191/212) + Weapon Skin – Accelerator (Nightmare)

Head toward the burning tree, go right up the stairs to a platform with 5 gold, the last secret, and the Accelerator skin.

📖 Codex Entry #1 – Sentinel Barracks + 21 Gold (212/212)

From the burning tree, turn left to find two caged bundles of gold—shoot to free them. Head down the ramp to the big gate, then look left at the bottom for 5 gold and the codex page.

🎯 That’s 100% Completion for Sentinel Barracks!

You’ve now found all collectibles, completed all mission challenges, and gathered every last piece of gold in Chapter 4: Sentinel Barracks of Doom: The Dark Ages.