TL;DR
- Belly of The Beast contains two collectibles: a Codex Entry and Komodo Toy
- Codex Entry is in poison pool near third objective after clearing enemies
- Komodo Toy requires shield switch activation and surviving multiple combat waves
- Use environmental awareness and weapon selection for efficient collection
- Complete both collectibles in approximately 15-20 minutes with proper strategy
GameSpot may receive revenue from affiliate and advertising partnerships for sharing this content and from purchases through links.
As the eighteenth mission in Doom: The Dark Ages, Belly of The Beast presents players with two distinct collectible items to discover. These valuable finds include narrative-expanding codex entries and character-inspired toys that enhance your gameplay experience. Understanding the level’s structure is crucial for efficient collection.
For comprehensive coverage of all hidden items throughout the campaign, our Complete Guide provides detailed maps and strategies for every mission.


During the third major combat segment from the mission start, immediately following your completion of the third primary objective and subsequent enemy elimination, the initial collectible becomes accessible. Positioned adjacent to the objective marker, this codex entry rests conspicuously within a hazardous toxic pool that demands cautious approach.
Strategic positioning before entering the contaminated area significantly reduces health depletion. Consider utilizing area-of-effect weaponry from our Weapons Unlock guide to maintain safe distance while securing the item.


Within this identical combat zone, locate the obstructed corridor protected by a shield activation mechanism. Engage the switch to disable the barrier, proceed through the newly accessible passageway, and descend into the chamber below. This action initiates an intensive multi-phase enemy engagement that tests your combat proficiency.
The subsequent confrontation unfolds across several distinct assault waves, each introducing progressively challenging adversary compositions. Persist through the complete engagement sequence until combat concludes, at which point the collectible toy becomes available for acquisition. Proper Class Guide selection proves invaluable for surviving these extended encounters.



Seasoned players should prioritize environmental awareness when navigating toward the poison-submerged codex. Common errors include rushing the collection without proper area clearance or underestimating the toxicity’s cumulative damage effect.
For the Komodo toy encounter, ammunition conservation during early wave phases ensures sufficient firepower for later, more demanding enemy types. Average completion time for both collectibles ranges between 15-20 minutes when employing optimized route planning and combat efficiency techniques.
Action Checklist
- Progress to third objective area and eliminate all hostile entities
- Navigate carefully to poison pool near objective marker to collect Codex Entry
- Activate shield switch blocking hallway access and descend into combat arena
- Survive multiple enemy waves until encounter completion
- Collect Komodo Toy from arena after final wave elimination
No reproduction without permission:SeeYouSoon Game Club » All Belly Of The Beast Collectibles In Doom: The Dark Ages Complete guide to finding both collectibles in Doom: The Dark Ages Belly of The Beast level with strategic tips
