- Underkeep discoveries requires opening all four hidden sturdy chests.
- Chest one is behind a large pillar near the entrance.
- Chest two is down the stairs in a corridor section.
- Chest three is in a back room between pillars and above a short stairway.
- Chest four is in a corridor near the area with sprinkler hazards.
Underkeep discoveries: What the Achievement Requires
The Underkeep discoveries achievement focuses on exploration rather than combat. Its objective is to find and open every sturdy chest hidden throughout the Underkeep. There are four chests to collect, and each one is positioned slightly away from the most obvious route.
The most efficient approach is to follow a deliberate route from the entrance through the corridors, then finish in the hazard area. This reduces unnecessary backtracking and makes it easier to confirm which chest locations have already been cleared.
Video Highlights:
- Four sturdy chest locations are covered in sequence.
- The first chest is positioned close to the entrance.
- Two chests are tucked into stair and pillar sections.
- The final chest is near the sprinkler hazards.
- The route is designed for achievement-focused exploration.
| Objective | Requirement | Total |
|---|---|---|
| Discover the hidden chests | Locate each sturdy chest | 4 |
| Complete the collection | Open every chest | 4 of 4 |
| Finish the achievement | Clear all listed objectives | Underkeep discoveries |
Treat the achievement as a four-stop collection route. Mark each chest mentally as soon as it opens, then continue forward instead of repeatedly checking the same corridor.
Four Chest Locations at a Glance
The four chests are spread across recognizable landmarks rather than being placed in open, central spaces. Pillars, stairs, back rooms, corridors, and hazard devices are the main visual clues to use while searching.
The table below provides a compact route reference. Use the landmark column when navigating and the approach column when you reach the correct section.
Chest One
Entrance landmark
Look behind the large pillar near the entry area.
Chest Two
Stairway landmark
Follow the corridor and check down the stairs.
Chest Three
Back-room landmark
Search between two pillars in the rear room.
Chest Four
Hazard landmark
Check the corridor near the sprinkler devices.
| Chest | Primary landmark | Search direction | Key visual clue |
|---|---|---|---|
| 1 | Underkeep entrance | Move behind the large pillar | Chest is close to the entry route |
| 2 | Corridor with stairs | Go down the stairs | Chest rests in the lower corridor area |
| 3 | Back room | Move between the two pillars and up the stairs | Chest is on the floor |
| 4 | Hazard corridor | Approach carefully near the sprinklers | Chest is on the ground in the corridor |
Chest one is the easiest to miss if you run directly into the main passage. Before moving deeper into the area, inspect the space behind the large pillar near the entrance.
Chest two requires a short descent. When the route reaches the corridor with stairs, look down instead of staying on the upper path. The chest is positioned below the main corridor level.
Chest three is hidden in a back room. Use the two pillars as reference points, then check the area reached by the nearby stairs. The chest is lying on the floor rather than being elevated on a platform.
Chest four is located in another corridor and is associated with the sprinkler hazards. Slow down when entering this section so you can identify the chest without rushing through the hazard area.
The chests are placed beside or below the primary route. Check behind pillars, below stairs, inside the back room, and along the hazard corridor before leaving each section.
Step-by-Step Underkeep Discoveries Route
Follow these steps in order to complete the collection with minimal retracing. The route begins at the entrance, moves through the corridor network, and ends near the sprinkler section.
Search Behind the Entrance Pillar
Start at the Underkeep entrance and inspect the area beside the large pillar. Move behind it rather than continuing immediately into the corridor. Open the sturdy chest once you locate it, then return to the route.
Descend the Corridor Stairs
Continue to the corridor containing the stairs. Go down into the lower section and check the area at the bottom. The second sturdy chest is positioned in this corridor section.
Inspect the Back Room
Travel to the back room and use the two pillars as landmarks. Move between them, then check the area up the stairs. The third chest is on the floor in this room.
Finish at the Sprinkler Corridor
Proceed to the final corridor and watch for the sprinkler hazards. Search the ground-level area near them to find the fourth sturdy chest. Open it to complete the collection objective.
| Route stage | Action | Confirmation |
|---|---|---|
| 1 | Search behind the entrance pillar | First sturdy chest opened |
| 2 | Descend the corridor stairs | Second sturdy chest opened |
| 3 | Check the back room near the pillars | Third sturdy chest opened |
| 4 | Search near the sprinklers | Fourth sturdy chest opened |
The order matters because each stop uses a different environmental clue. The first chest is tied to the entrance landmark, the second to a change in elevation, the third to a room layout, and the fourth to a hazard area.
If a chest does not appear immediately in view, reposition around the landmark instead of assuming the location is empty. Small changes in angle can reveal a chest placed behind a pillar, below a staircase, or at the edge of a corridor.
After opening the fourth chest, verify that the achievement objective has updated. If it has not, revisit the four landmarks in order and confirm that every chest was opened rather than merely located.
Search Tips and Hazard Awareness
A clean search depends on observation more than speed. The chest locations are recognizable once you know the associated landmarks, but rushing through the Underkeep can cause you to pass a chest or enter the final corridor without noticing the hazard devices.
Use the following habits during the route:
- Pause at every pillar: The first and third locations both use pillars as navigation clues.
- Check different elevations: One chest is down stairs, while another is found near stairs in a back room.
- Look at floor level: Several chests are described as resting on the ground.
- Slow down near sprinklers: The final corridor contains devices that can disrupt your approach.
- Track opened chests: Record each completed stop before moving to the next landmark.
| Search habit | Why it helps | Best location |
|---|---|---|
| Inspect both sides of pillars | Chests can be concealed by the structure | Entrance and back room |
| Check above and below stairs | The route changes elevation | Corridor and back room |
| Scan the floor | The chests are ground-level objects | All four locations |
| Move carefully near hazards | Sprinklers can interrupt your approach | Final corridor |
| Confirm each opening | Finding a chest is not the same as opening it | Entire route |
The sprinkler corridor deserves extra attention. The final chest is close to the hazard devices, so approach the area with enough space to recognize the chest and interact with it. Avoid treating the corridor as a simple pass-through.
If you are retracing the route, use the landmarks rather than memory alone. “Near the entrance,” “down the stairs,” “between the pillars,” and “near the sprinklers” are more reliable references than attempting to remember the exact angle from which each chest was first seen.
When retracing the route, identify the landmark first and search second. This method is more reliable than scanning every wall or corridor from the beginning.
Achievement Checklist and Final Verification
Use this checklist to confirm that the four-part collection is complete. The achievement requires every sturdy chest, so leaving one unopened prevents the objective from being fully finished.
Underkeep Discoveries Checklist:
- Open the sturdy chest behind the large pillar near the entrance
- Open the sturdy chest down the corridor stairs
- Open the sturdy chest in the back room between the pillars
- Open the sturdy chest near the sprinkler hazards
- Confirm the achievement objective has updated
| Verification point | Correct result | If it is incomplete |
|---|---|---|
| Entrance landmark | Chest behind the large pillar is open | Recheck the area before the main corridor |
| Stair corridor | Chest below the stairs is open | Return to the lower corridor section |
| Back room | Chest near the pillars is open | Search between the pillars and near the stairs |
| Sprinkler corridor | Final chest is open | Approach the hazard area slowly |
| Achievement status | Objective recognizes all four | Revisit each location in route order |
Before leaving the Underkeep, compare your progress against the four landmarks. If the achievement has not completed, begin with the entrance chest and follow the same route again. This avoids random searching and gives you a consistent way to identify the missed location.
The final verification is especially useful when a chest was visible but not interacted with. The objective is based on opening the sturdy chests, not simply passing close to them.
For a missed chest, use the order entrance pillar, stair corridor, back room, and sprinkler corridor. This four-point loop is faster than searching the entire area without a route.
Q: How many chests are required for Underkeep discoveries?
The achievement requires finding and opening four sturdy chests hidden throughout the Underkeep.
Q: Where is the first Underkeep chest?
The first chest is near the entrance, positioned behind a large pillar.
Q: Which chest is near the sprinkler hazards?
The fourth chest is located on the ground in a corridor near the sprinkler devices.
Q: What should I do if the achievement does not complete?
Follow the four-landmark route again and confirm that each sturdy chest was opened, not just located. Start with the entrance pillar and finish near the sprinklers.