The entrance to Undercroft Dungeon is located in level 10 of the Wastelands. High combat stats and equipment is recommended. There are lootable chests throughout the dungeon. If you save your Undercroft Key until the last treasure chest at the end (22 keys in a row) you get a chance at the best loot. (AKA don't use your Undercroft Key on the other chests or you'll have to start over.)

Chest Rolls

Each chest appears to have five loot rolls. It's unknown if a higher roll is better or worse, or how the rolls even determine chance based on the odds. Whether a 1.0 roll has a chance to roll anything with a chance less than 1.0, making a lower loot roll more valuable, or if a higher loot roll can generate better loot. It appears to be the latter as higher chests have higher rolls. More Information is needed.

Chest Rolls
1 1.0, 1.0, 0.5, 0.25, 0.1
2 1.0, 1.0, 0.5, 0.25, 0.1
3 1.0, 1.0, 1.0, 0.25, 0.1
4 1.0, 1.0, 1.0, 0.5, 0.25
5 1.0, 1.0, 1.0, 0.5, 0.25

Undercroft Chest #1

Base Rewards

Undercroft Chest #1 always contains the following item(s)

Item Quantity Rarity Value
  Coins 100 Always

100  

Potential Rewards

Undercroft Chest #1 grants five additional loot rolls upon completion. Each roll has a chance to succeed, with the following success rates (in order):

  • 1st roll: 100%
  • 2nd roll: 100%
  • 3rd roll: 50%
  • 4th roll: 25%
  • 5th roll: 10%

Only successful rolls yield extra loot.

Item Quantity Rarity Value
  Coins 50-500 ~1/2.7

50–500  

Bass  IOU 1-5 ~1/5.7

6–30  

Bluegill  IOU 1-5 ~1/6.7

7–35  

  Fire Scroll 5-50 1/20

10–100  

  Nature Scroll 5-50 1/20

10–100  

  Water Scroll 5-50 1/20

10–100  

  Iron Arrows 10-100 1/20

50–500  

Iron Bar  IOU 1-10 1/20

37–370  

  Iron Gloves 1 1/400

75  

  Iron Hatchet 1 1/400

75  

  Iron Helm 1 1/400

75  

  Iron Pickaxe 1 1/400

75  

  Iron Scimitar 1 1/400

135  

  Iron Full Helm 1 1/400

150  

  Iron Longsword 1 1/400

150  

  Iron Battleaxe 1 1/400

240  

  Iron Chainmail Body 1 1/400

240  

  Iron Platelegs 1 1/400

240  

  Iron Shield 1 1/400

240  

  Iron Great Sword 1 1/400

360  

  Iron Chestplate 1 1/400

480  

Undercroft Chest #2

Base Rewards

Undercroft Chest #2 always contains the following item(s)

Item Quantity Rarity Value
  Coins 250 Always

250  

Potential Rewards

Undercroft Chest #2 grants five additional loot rolls upon completion. Each roll has a chance to succeed, with the following success rates (in order):

  • 1st roll: 100%
  • 2nd roll: 75%
  • 3rd roll: 50%
  • 4th roll: 25%
  • 5th roll: 10%

Only successful rolls yield extra loot.

Item Quantity Rarity Value
  Coins 100-500 ~1/2.9

100–500  

Carp  IOU 1-5 ~1/6.7

11–55  

Walleye  IOU 1-5 1/10

11–55  

  Fury Scroll 5-25 ~1/13.3

15–75  

  Rage Scroll 3-15 ~1/13.3

9–45  

  Energy Scroll 10-50 ~1/13.3

40–200  

Steel Bar  IOU 2-10 ~1/13.3

186–930  

  Steel Arrows 20-100 1/20

220–1,100  

  Steel Full Helm 1 1/400

187  

  Steel Gloves 1 1/400

187  

  Steel Hatchet 1 1/400

187  

  Steel Helm 1 1/400

187  

  Steel Pickaxe 1 1/400

187  

  Steel Scimitar 1 1/400

337  

  Steel Longsword 1 1/400

375  

  Steel Battleaxe 1 1/400

600  

  Steel Chainmail Body 1 1/400

600  

  Steel Platelegs 1 1/400

600  

  Steel Shield 1 1/400

600  

  Steel Great Sword 1 1/400

900  

  Steel Chestplate 1 1/400

1,200  

Undercroft Chest #3

Base Rewards

Undercroft Chest #3 always contains the following item(s)

Item Quantity Rarity Value
  Coins 750 Always

750  

Potential Rewards

Undercroft Chest #3 grants five additional loot rolls upon completion. Each roll has a chance to succeed, with the following success rates (in order):

  • 1st roll: 100%
  • 2nd roll: 75%
  • 3rd roll: 50%
  • 4th roll: 25%
  • 5th roll: 10%

Only successful rolls yield extra loot.

Item Quantity Rarity Value
  Coins 150-500 1/4

150–500  

Salmon  IOU 2-5 1/10

14–35  

  Fury Scroll 15-50 ~1/13.3

45–150  

  Rage Scroll 15-50 ~1/13.3

45–150  

  Warp Scroll 3-10 ~1/13.3

21–70  

Tuna  IOU 2-5 ~1/13.3

90–225  

Palladium Bar  IOU 3-10 ~1/13.3

675–2,250  

  Palladium Arrows 30-100 1/20

900–3,000  

  Alchemy Scroll 6-20 1/40

36–120  

  Fire Scroll 30-100 1/50

60–200  

  Nature Scroll 30-100 1/50

60–200  

  Water Scroll 30-100 1/50

60–200  

  Bandit Mask 1 1/50

11  

Elf Ears  IOU 2-5 1/50

150–375  

  Coins 1,800-6,000 1/100

1,800–6,000  

  Amethyst Necklace 1 1/100

225  

  Sapphire Necklace 1 1/100

450  

  Emerald Necklace 1 1/100

675  

  Topaz Necklace 1 1/100

900  

  Palladium Gloves 1 1/500

450  

  Palladium Hatchet 1 1/500

450  

  Palladium Helm 1 1/500

450  

  Palladium Pickaxe 1 1/500

450  

  Palladium Scimitar 1 1/500

810  

  Palladium Full Helm 1 1/500

900  

  Palladium Longsword 1 1/500

900  

  Palladium Battleaxe 1 1/500

1,500  

  Palladium Chainmail Body 1 1/500

1,500  

  Palladium Platelegs 1 1/500

1,500  

  Palladium Shield 1 1/500

1,500  

  Palladium Great Sword 1 1/500

2,250  

  Palladium Chestplate 1 1/500

3,000  

Undercroft Chest #4

Base Rewards

Undercroft Chest #4 always contains the following item(s)

Item Quantity Rarity Value
  Coins 1,500 Always

1,500  

Potential Rewards

Undercroft Chest #4 grants five additional loot rolls upon completion. Each roll has a chance to succeed, with the following success rates (in order):

  • 1st roll: 100%
  • 2nd roll: 100%
  • 3rd roll: 75%
  • 4th roll: 50%
  • 5th roll: 25%

Only successful rolls yield extra loot.

Item Quantity Rarity Value
  Coins 400-1,000 1/4

400–1,000  

Crab  IOU 8-20 1/10

416–1,040  

Marlin  IOU 6-15 ~1/11.1

312–780  

  Coins 2,000-5,000 ~1/12.2

2,000–5,000  

  Rage Scroll 40-100 ~1/13.3

120–300  

  Alchemy Scroll 8-20 ~1/13.3

48–120  

  Warp Scroll 6-15 ~1/13.3

42–105  

Coronium Bar  IOU 2-5 1/20

3,750–9,375  

Potion Of Accuracy (2)  IOU 2-5 1/25

30–75  

  Beer 1 1/40

3  

  Coins 4,000-10,000 1/50

4,000–10,000  

String  IOU 60-150 1/50

60–150  

Potion Of Mining (2)  IOU 2-5 1/50

30–75  

Potion Of Smithing (2)  IOU 2-5 1/50

30–75  

  Coronium Arrows 40-100 1/100

2,520–6,300  

  Citrine Necklace 1 1/100

1,125  

  Ruby Necklace 1 1/100

1,350  

  Diamond Necklace 1 1/200

1,575  

  Pirate's Key 1 1/400

1  

  Coronium Gloves 1 ~1/666.7

3,750  

  Coronium Hatchet 1 ~1/666.7

3,750  

  Coronium Helm 1 ~1/666.7

3,750  

  Coronium Pickaxe 1 ~1/666.7

3,750  

  Coronium Scimitar 1 ~1/666.7

6,750  

  Coronium Full Helm 1 ~1/666.7

7,500  

  Coronium Longsword 1 ~1/666.7

7,500  

  Coronium Battleaxe 1 ~1/666.7

13,125  

  Coronium Chainmail Body 1 ~1/666.7

13,125  

  Coronium Platelegs 1 ~1/666.7

13,125  

  Coronium Shield 1 ~1/666.7

13,125  

  Coronium Great Sword 1 ~1/666.7

19,687  

  Coronium Chestplate 1 ~1/666.7

26,250  

  Silver Warrior Helm 1 1/4,000

3,000