Stoneheart Depths
Far below the mountain mines lie the Stoneheart Depths — where the rock itself stirs to life and the Warden guards the richest seams ever struck.
How a run works
Waves are fought in order, without a break: your HP carries from one wave straight into the next, and nothing heals you in between — bring food, or an Auto Eat that can keep up. Clear the last wave and the 
Stoneheart Chest drops and the run restarts at wave 1, so a dungeon you can clear farms itself.
Die at any wave and the run ends there. You keep everything you picked up on the way, you are healed to full, and the dungeon resets to wave 1 — the only thing you lose is the progress toward the chest.
Every wave pays XP as if it were level 78 — the dungeon's highest wave — so the easy opening waves are not penalised for being below your level. See Combat for the XP formula.
This dungeon mixes 2 combat styles (
Melee,
Magic), so no single loadout holds the triangle advantage for the whole run. Check the wave list before you commit.
Waves
| # | Monster | Level | HP | Defense | Fights as | Beat it with | XP |
|---|---|---|---|---|---|---|---|
| 1 |  Cave Crawler | 25 | 200 | 20 | Melee | Magic | 400 |
| 2 |  Rockshell Crab | 35 | 320 | 40 | Melee | Magic | 800 |
| 3 |  Dust Devil | 45 | 480 | 35 | Magic |  Ranged | 1,600 |
| 4 |  Basalt Golem | 55 | 750 | 65 | Melee | Magic | 2,800 |
| 5 |  Crystal Sentinel | 65 | 1,050 | 85 | Magic | Ranged | 4,200 |
| 6 |  Stoneheart Warden | 78 | 1,800 | 110 | Melee | Magic | 9,000 |
"Beat it with" is the combat triangle pick: attacking with that style gives +15% hit chance and +10% damage, and the style it beats takes the same penalty. Defense is what your hit chance is rolled against — a high-Defense monster at your own level is a slower kill than its level suggests.
What the Stoneheart Chest holds
Opening one rolls a single line from this table, so the odds below are the chance per chest.
| Drop | Amount | Chance |
|---|---|---|
 Adamantite Ore | ×60–150 | 24.44% |
 Runite Ore | ×40–100 | 22.22% |
 Mithril Ore | ×80–200 | 20.00% |
 Coal Ore | ×100–300 | 13.33% |
 Dragon Bones | ×5–15 | 11.11% |
 Stoneheart boots | ×1 | 2.00% |
 Stoneheart belt | ×1 | 1.89% |
 Stoneheart legs | ×1 | 1.78% |
 Stoneheart body | ×1 | 1.67% |
 Stoneheart helmet | ×1 | 1.56% |