The Heart of Darkness is the last phase of the final fight and it carries 252 HP on the normal difficulty and 303 on Bloodmoon, with 0% PROT and 23.75% dodge. That works out to roughly 331 and 397 raw damage before the run is over — and it is only the third phase of a three-phase encounter that totals 446 HP (536 on Bloodmoon) across all its forms.
This page works from the stat blocks cached in darkestdungeon-bosses.json, parsed from darkestdungeon.wiki.gg. The phase ladder and the dungeon roster below are both from that file, so you can check every figure.
The Heart of Darkness stat block
| Stat | Normal | Bloodmoon |
|---|---|---|
| HP | 252 | 303 |
| PROT | 0% | 0% |
| DODGE | 23.75% | 23.75% |
| SPD | 10 | 10 |
| Stun resist | 87.5% | 87.5% |
| Blight resist | 47.5% | 47.5% |
| Bleed resist | 47.5% | 47.5% |
| Debuff resist | 67.5% | 67.5% |
| Size | Unimaginable (4) | Unimaginable (4) |
Size 4 means it fills the enemy formation alone — no adds to kill, no ranks to shuffle. Every action your party takes in this fight is aimed at the same target, which is the one thing that makes a 252-HP boss with 10 speed manageable.
0% PROT and 23.75% dodge
The armour column is a zero, which is unusual for a final boss. Compare the Countess at 30% PROT or the Fanatic at 15%, and the Heart of Darkness is comparatively soft per hit.
What it has instead is dodge:
- 252 HP ÷ 0.7625 = 330.5 effective raw damage on normal.
- 303 HP ÷ 0.7625 = 397.4 on Bloodmoon.
- That is the cost of the 23.75% miss rate folded into the health pool.
Put that next to the rest of the file:
| Boss | HP | PROT | DODGE | Effective HP |
|---|---|---|---|---|
| Countess | 480 | 30% | 25% | ~686 |
| Heart of Darkness | 303 | 0% | 23.75% | ~397 |
| Swine Prince | 271 | 0% | 0% | 271 |
| Shambler | 158 | 33% | 22.5% | ~236 |
The final boss is not the biggest damage check in the game — the Countess is, by a wide margin. What makes the Heart of Darkness hard is that it comes at the end of a three-phase fight with a speed-10 body, so the resources you spend here are the resources you did not spend getting here.
Both damage channels are open at 47.5%
This is the most permissive resistance row of any boss in the file:
- Blight 47.5% and bleed 47.5% — both land more often than they fail.
- Debuff 67.5% — usable, though not reliable.
- Stun 87.5% — technically possible, practically a coin flip or worse.
That means you do not have to rebuild your party for the final boss the way you have to for the Countess (bleed only, blight at 110%) or the Hag (bleed only, blight at 105%). Whatever damage engine carried you through the Darkest Dungeon works here.
It also means the fight is decided before it starts, by whether you arrived with heroes alive and stress under control. There is no resistance puzzle to solve at the last minute.
Speed 10 and 87.5% stun resistance
Speed 10 puts it near the top of the game’s speed table — the same band as the Necromancer’s Champion 10 and the Baron’s 10, and faster than any of your heroes without trinkets.
Consequences for the final round of the run:
- It acts before your healer in most rounds, so you cannot heal reactively.
- It acts before your debuff lands, so the first application is always late.
- Stun at 87.5% is not the Necromancer’s 75%, so the stun-lock plan that beat the Ruins boss does not transfer.
The counter is preparation rather than tactics: enter the phase with health and stress already topped up, because the opening round is the one you cannot control.
The three phases, in real numbers
The final encounter is not one stat block. The file carries three:
| Phase | HP (normal / Bloodmoon) | PROT | SPD | Stun resist | Notes |
|---|---|---|---|---|---|
| Ancestor (First Form) | 5 / 6 | 100% | 12 | 122.5% | The story of Darkest Dungeon is narrated by the Ancestor, a mysterious and seemingly omnipresent character who accompanies the player in their adventures. Along the player’s journey the Ancestor will gradually reveal, through his foreboding comments, the history of the Hamlet and the various monsters infesting the… |
| Gestating Heart | 189 / 227 | 0% | 2 | 72.5% | The Gestating Heart is the second-to-last form of the final boss of the Darkest Dungeon. Classified as ELDRITCH, it is a wriggling mass of horror that seems to be incubating an even more frightening and incomprehensible form. |
| Heart of Darkness | 252 / 303 | 0% | 10 | 87.5% | Heart of Darkness is the ultimate boss of Darkest Dungeon. It is the last phase of the Ancestor fight, whose form became a vessel for the creature to cross over. Heart of Darkness has a terrible ability called Come Unto Your Maker, which instantly kills a hero - regardless of HP or stress. |
“The Ancestor has only 5 health points, but is immune to all forms of damage” — darkestdungeon.wiki.gg, Ancestor (First Form) stat block
The first form’s 100% PROT (which the datasheet notes shows as 80% in game) explains why it has 5 HP: it is a scripted phase, not a damage phase. You are not meant to kill it with damage, and spending turns trying is wasted.
The middle phase is the interesting one. 189 HP at 0% PROT with only speed 2 and one action per round is a slow, soft target — the opposite of the final form. Total the three phases and you get 446 HP on normal, 536 on Bloodmoon, split unevenly between a phase you cannot damage, a slow phase, and a fast one.
The dungeon roster you fight on the way
The Heart is the last of the Darkest Dungeon’s four bosses — the Shuffling Horror’s entry describes itself as the first of four — and the earlier quests are gated by minibosses from the same file. Their numbers explain why bleed is the right damage type for the whole dungeon:
| Enemy | HP (normal / Bloodmoon) | PROT | SPD | Actions | Bleed res | Blight res |
|---|---|---|---|---|---|---|
| Shuffling Horror | 162 / 195 | 33% | 2 | 2 | 67.5% | 107.5% |
| Mammoth Cyst | 158 / 190 | 25% | 3 | 2 | 67.5% | 87.5% |
| Templar Impaler | 137 / 165 | 0% | 5 | 2 | 67.5% | 97.5% |
| Templar Warlord | 105 / 126 | 0% | 6 | 2 | 67.5% | 97.5% |
| Rapturous Cultist | 21 / 26 | 0% | 9 | 1 | 47.5% | 47.5% |
| White Cell Stalk | 25 / 30 | 0% | 8 | 1 | 87.5% | 67.5% |
Four of the six sit at exactly 67.5% bleed resistance, while blight resistance ranges from 47.5% to 107.5% on the Shuffling Horror — which is above 100%, so blight does not land on it at all. A party that arrives with bleed handles the Shuffling Horror, the Mammoth Cyst and both Templars at the same efficiency.
The two adds worth targeting first are the small fast ones: the Rapturous Cultist at speed 9 and the White Cell Stalk at speed 8, both with 0% PROT and 21–30 HP. They act before your party and they die in one hit.
Party shape for the last run
What the numbers ask for across all four quests:
- Bleed as the primary channel. 67.5% across the dungeon roster, 47.5% on the final boss.
- Two damage dealers that can hit rank 1–4. The Shuffling Horror is Gigantic (3), the Heart is Unimaginable (4), so nothing is hiding.
- Stress control. Three phases, one of them scripted, is a long night.
- No blight specialist. 107.5% on the Shuffling Horror is a hard no.
- No stun build. 87.5% to 147.5% across the roster.
The Darkest Dungeon mission guide covers the quest structure and provisioning, which is where most attempts actually fail. The boss guide puts every boss in the file on one page, and the boss database has the raw tables.
Why the final boss is not the hardest boss
The Heart of Darkness has 252 HP and no armour. The Countess has 480 HP, 30% PROT and three actions a round, for an effective requirement of about 686 damage. The Fanatic has 203 HP behind 15% PROT and three actions at speed 9.
By raw numbers the final boss is mid-tier. It is the hardest moment in the game because of what precedes it: three earlier quests, four earlier bosses, and a roster of minibosses that all resist blight. The difficulty guide and progression guide cover the ramp that gets you there.