Doom The Dark Ages Chapter 12: Sentinel Command Station Collectible Locations Guide

Sentinel Command Station is the 12th chapter in Doom: The Dark Ages. This chapter includes 15 collectible locations, 177 Gold, and 3 mission challenges. This detailed walkthrough will guide you to all collectibles, secrets, and mission challenges in the chapter to help you achieve 100% completion. If you miss anything, you can revisit collectibles via the chapter select feature.

Chapter Summary

• Gold: 177
• Ruby: 1
• Wraithstone: 1
• Demonic Essence – Health: 1
• Secrets: 9
• Codex Entries: 1
• Collectible Toys: 1
• Skins: 1
• Mission Challenges: 3

Mission Challenges Walkthrough

Mission Challenge #1 – Punching Bag

• Objective: Strike a Battleknight with a melee attack 10 times (Reward: 50 Gold)
• How to Complete: Battleknights are armored Hell Knights wielding battleaxes. You will encounter one in nearly every red combat section. Focus melee attacks on them to complete the challenge. You can also farm this by restarting checkpoints near the “Auto Turret” Shield Rune where a Battleknight spawns regularly.

Mission Challenge #2 – Wait For It

• Objective: Kill 10 demons with explosive barrels (Reward: 1 Ruby)
• How to Complete: Explosive barrels are scattered throughout the chapter. Shoot these barrels when groups of weaker demons are nearby to rack up multiple kills quickly.

Mission Challenge #3 – Skeleton Key

• Objective: Open 2 Secret Key doors (Reward: 50 Gold)
• How to Complete: Collect the purple Secret Key during the chapter and use it to unlock two Secret Key doors. Both count as secrets and are listed below.

Collectible Locations & Secrets

8 Gold (8/177)

• After entering the ventilation shaft and dropping down, turn right twice to find this Gold.

Secret #1 + Codex Entry #1 + 5 Gold (13/177)

• After leaving the ventilation shaft, ignore the left path and proceed forward to find a hole in the wall on the right containing these items.

Secret #2 + 14 Gold + Weapon Skin #1 (Chainshot – Nightmare) (27/177)

• Fall into the Control Room. Break the vent cover on the left wall with Shield Charge to enter a secret room with Gold, the Weapon Skin, and demons.

8 Gold (35/177)

• In the secret room above, look on the back of a transport platform for this Gold.

8 Gold (43/177)

• After dropping into the first red combat encounter, go through to the next room and interact with a console to open a path leading to 8 Gold near the Sentinel Shrine. Ignore the Secret Key gate for now.

6 Gold + Secret #3 (49/177)

• After interacting with a second console, a ventilation shaft opens. Climb in, turn right for Gold, then turn right again to find a Life Sigil that triggers the secret.

Demonic Essence – Health #1

• Automatically rewarded for defeating the Pinky Rider miniboss after acquiring the Ravager weapon.

50 Gold (99/177)

• After opening a door in a later room, the 50 Gold chest sits to the right.

Secret #4 + Ruby #1 + 8 Gold (107/177)

• After taking an elevator and crossing a gap with a Shield Jump, drop into a hole at the corridor’s end to find these rewards. Push a crate to climb back out.

12 Gold + Yellow Key (119/177)

• Opposite the Yellow Key in its room, find this Gold.

Secret #5 + 50 Gold (169/177)

• After getting the Yellow Key, open the elevator gate and jump across a gap to a chest with 50 Gold. If you fall down the shaft, a jump pad activates after you collect the Shield Rune.

8 Gold (177/177)

• Near the previous chest, break a ventilation cover with Shield Charge and turn left to find the last 8 Gold.

Secret #6

• Continue down the ventilation shaft and climb the wall, then turn around to spot a Life Sigil to trigger the secret.

Secret #7 + Secret Key

• Break out of the ventilation shaft and clear all demons to obtain the Secret Key needed to open two Secret Key gates.

Secret Key Door #1 + Secret #8 + Wraithstone #1

• Immediately after leaving the Secret Key room, unlock the gate on your right, defeat the Agaddon Hunter, and claim the Wraithstone.

Secret Key Door #2 + Secret #9 + Collectible Toy #1 (Kreed Maykr)

• Drop down the elevator shaft, collect the next Shield Rune, clear the final red combat encounter, then return to the side room with the Secret Key gate for the collectible toy.

Completion Notes

You’ve now collected 100% of all collectibles in Sentinel Command Station, Chapter 12 of Doom: The Dark Ages. Use chapter select to revisit any missed items.

Related Guides

• Complete Doom: The Dark Ages Collectibles Guide
• Doom The Dark Ages Chapter 11: Hellbreaker Collectible Locations
• Doom The Dark Ages Chapter 13: Collectible Locations