If you’re diving into Doom: The Dark Ages, you already know how vital secret keys are for unlocking hidden areas and valuable items. These keys are essential throughout the game, helping you discover treasures that can significantly enhance your gameplay. To keep your focus on slaying demons rather than hunting for keys, we’ve compiled a comprehensive guide to all secret key locations—ensuring you can find them quickly and efficiently.
As an avid gamer, I’ve personally navigated through these intricate levels, and I know how crucial these keys are for a fulfilling experience. Let’s explore where to find each one.
1. Village of Khalim Secret Key Location (Chapter 1)
The first secret key is located in the Village of Khalim. It’s relatively easy to spot. Just follow the main quest until you reach the right vicinity on the map. Take the turn that ascends the mountain to discover the Secret Key.

2. Siege Part 1 Secret Key Location (Chapter 6)
In Chapter 6, Siege Part 1, you can find another secret key. Simply navigate to the location shown on the map below. There are no complex puzzles here, so it will be a swift pick-up.

3. Siege Part 2 Secret Key Location (Chapter 7)
The next secret key appears in Chapter 7, Siege Part 2. This one is slightly trickier. Head to the second floor and look out for a breakable wall near an open balcony. Smash through to uncover a secret area, and then take the jump booster to reach the secret key.

4. Ancestral Forge Secret Key Location (Chapter 9)
In Chapter 9, known as Ancestral Forge, the secret key is also straightforward to obtain. Just head to the designated location on the map and grab the key from the ground with no additional obstacles.

5. The Forsaken Plains Secret Key Location (Chapter 10)
As you enter The Forsaken Plains, look for a secret key right at the start, concealed behind a locked door. To acquire it, utilize the Shield Recall ability to ascend the nearby building. Once you spot a hole in the ground, drop down to obtain the key.

6. Sentinel Command Station Secret Key Location (Chapter 12)
Chapter 12, Sentinel Command, presents a challenge in finding your secret key. Engage with your surroundings, navigate through the small pathways, and climb into the ventilation system. Overcome all enemies in the room before you can collect your key.

7. Temple of Lomarith Secret Key Location (Chapter 17)
Near the conclusion of Chapter 17, look for the secret key in the Temple of Lomarith. Once you reach the area needing the key, search for a large ship on the map. After defeating the enemies on deck, proceed to the door at the end, which will automatically open for you.

8. Reckoning Secret Key Location (Chapter 22)
The last secret key located in the Reckoning chapter entails simply following the primary quest until you encounter an elevator. Before moving on, glance back to find the secret key near the gate.

These secret keys are instrumental in your quest to collect various items like toys, codexes, gold, rubies, and Wraithstones. Make sure to obtain these keys first!
If you find yourself stuck in your search for any secret key, drop your queries in the comments. Let’s solve this together.