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Complete guide to all secrets, collectibles, challenges, and gold locations in Doom The Dark Ages Chapter 18, Belly of the Beast.
Chapter 18, titled Belly of the Beast, offers a dense collection run with 12 collectibles, 153 Gold, a Ruby, and two challenges. If you are aiming for full completion, the chapter requires close attention to alternate paths, climbable walls, and shield-trigger mechanisms. This guide helps you pick everything up in one playthrough, reducing the need for repeats.
All Secrets in Doom The Dark Ages Chapter 18 Belly of the Beast
| Secret | Collectibles | How to Access | Notes |
|---|---|---|---|
| 1 | 50 Gold (50/153) | After clearing all enemies and using the organ for progression, turn left. | The gold chest is in plain view once the area is clear. |
| 2 | 6 Gold (56/153) | From Secret #1, turn around and follow the left wall near the objective door. Use the green skeleton grapple above. | Easy to miss if you enter the door too early. |
| — | 16 Gold (72/153) | Continue main path to next room. Destroy the second wall from the right. | Wall destruction is necessary for access. |
| — | 5 Gold (77/153) | In the same room, destroy the first wall on the left. | This room contains multiple destructible walls. |
| 3 | Ruby + Secret Area | Look up from the last gold. Use shield on blue symbol, then on green statue. Climb the wall on the left and turn around. | The Ruby is visible once you reach the platform. |
| 4 | 50 Gold (127/153) | After destroying the second organ part, turn right and use the green statue grapple to reach the platform. | Directly tied to main story event. |
| — | Codex Entry (Commander Thira) | Progress past organ room until long hallway full of enemies. After waves, before breaking third organ part, go to opposite side. | Codex is near final fight area. |
| 5 | 7 Gold (134/153) + Toy (Komodo) + Challenge: Swallowed Whole | After Codex, jump off the ledge ahead, turn right. Use the shield on the blue symbol, enter area for gold. Behind gold, drop down and fight. | Completing the fight earns the toy and challenge reward. |
| 6 | 14 Gold (148/153) | After portal exit, hug right wall. Enter first opening, look up and use shield on blue symbol, proceed through hallway. | Gold is visible from entry; secret is above. |
| — | 5 Gold (153/153) | After destroying the third organ part, a new path opens on the left. Cross the bridge to find the gold. | Final collectible of the chapter. |
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