From Dark and Darker Wiki

This loose loot spawn is found in the treasure rooms which become available when killing the following boss pairs:

The dual boss treasure room is then accessible via the stone doors found in either of the individual boss treasure rooms.

Loot Table

Acknowledge

There is significant evidence that luck does not work as previously believed.
The wiki has been adjusted to better fit collected data. The benefit that 500 Luck now gives is closer to what 50 Luck was previously believed to provide.

I acknowledge that the information presented herein may not currently be true.

0
Loot Summary at 0 Luck
Type
Rarity
Weapon
91.0%
Utility
9.0%
Epic
68.42%
62.3382%6.0818%
Legend
30.0%
27.3333%2.6667%
Unique
1.5%
1.25%0.25%
Artifact
0.08%
0.08%

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Loot Table at 0 Luck
NameLuck GradeLuck Grades present on the graph but missing in the column below are associated with dropping nothing.RarityTypeItem CountProbability
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
8ArtifactWeapon10.0038%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicUtility11.5204%
6LegendaryUtility10.6667%
7UniqueUtility10.0625%
8ArtifactWeapon10.0038%
8ArtifactWeapon10.0038%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicUtility11.5204%
6LegendaryUtility10.6667%
7UniqueUtility10.0625%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
8ArtifactWeapon10.0038%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicUtility11.5204%
6LegendaryUtility10.6667%
7UniqueUtility10.0625%
5EpicUtility11.5204%
6LegendaryUtility10.6667%
7UniqueUtility10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
8ArtifactWeapon10.0038%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%
8ArtifactWeapon10.0038%
5EpicWeapon11.5204%
6LegendaryWeapon10.6667%
7UniqueWeapon10.0625%