The Ossuary



Level Chronology





Blockhouse is the second level of The Ossuary, the fourth episode of Heretic.

The level is centered around a large central structure (the Blockhouse itself), with wide walkways surrounding it on all sides and a large moat of slime around the entire building complex. The central structure can be accessed by four different teleports, which gradually lower the central pillar holding an important key.


E4M2 heretic


You start at the southeastern extension of the platform. There are three types of enemies, each guarding a separate location: gargoyles lurk at the three other extensions, sabreclaws patrol on the bottom of the moat and ophidians are ready to fire at you from an encircling platform on the other side of the moat. When you drop into the moat at any possible location, a teleporter will become accessible at the northeastern extension. Enter the device and you will end up inside the inner building. Consistently with the place you were transported from, you stand on a high ledge at the northeast corner of a square-shaped zone. Each corner has a similar ledge. In the middle of the water below, there is a plinth and a pyramid with the yellow key on its top.

The idea is simple: each time you leave a new ledge by dropping into the water, a step of the pyramid will descend. When the fourth exit has been done, the key will finally come down. Thus, grab the Ethereal Crossbow and the Silver Shield and jump away. You can fight the existing sabreclaws and ophidians effectively by using Time Bombs that are found on all four ledges. Alternatively, you can fool the monsters to fight each other. When you approach the pyramid, an elevator will descend allowing you to return to the ledge. Use the teleporter to go back to the other side of the wall.

Now, enter the northwestern extension of the tan platform. When you use the exposed teleporter, you will end up onto the consistent ledge inside the inner building. Take the Dragon Claw and the Tome of Power and repeat the last actions of the previous paragraph. The teleporter at the southwestern extension will descend next. Take the Hellstaff and the Morph Ovum and go on. Finally, the teleporter at the southeastern extension will open. Pick up the Phoenix Rod and the Mystic Urn and wait for the yellow key to become available. At the moment of collecting, yet a fifth elevator will descend. It allows you to reach the yellow door.

Travel up and enter the door to find yourself on the narrow platform between the moat and the inner building. When you enter the door, the banner walls in the middle of the western, northern and eastern sides of the fortress will descend revealing disciples at their guard posts. Go all the way to the other side of the encircling platform to find the green key.

The green door can be found at the northeastern extension. It will reveal a curvy passage with an Iron Lich opposition on the medium skill level or a higher one. The blue key is at the other end. Collecting the key will open doors for more Iron Liches (or a Maulotaur on the two highest levels), but notice that you can escape freely. It will take a long time for the monsters to enter the main area, given that they make it past the blue key area or the curves en route.

Return to the tan platform and proceed to the southern wall of the fortress where the blue door is located. Open it to be greeted by a Maulotaur. In case you do not want to fight, you can lure the monster into the moat to make him less dangerous. He does not need a staircase but will simply drop himself from the edge once it comes in front. Enter the exit door, hit the switch in the southern wall and move onto the revealed exit teleporter.


There are no secrets on this level.

Unofficial Secrets

  • It is possible to reach the sludge lake outside the fortress. When the disciple posts have been opened after entering the yellow door, you can step onto a surrounding fence at a post; it happens by doing so from a descended portal as its surface is located eight map units higher than the actual floor. You can jump into the sludge from a fence but keep in mind that the time at the lake is limited; there are three or two units of Wings of Wrath available, and you may use them to both return onto one of the three disciple posts and to avoid the damage of the fluid. The wings are located in the sludge at the roots of the posts, with those in the west and the east present on each skill level and the one in the north on the three easiest levels. Alternatively, you can use a Ring of Invulnerability for safety and a Chaos Device for a return. Crystal Vials and small ammunition pickups are scattered all over the area (Wand Crystals and Mace Spheres not being included). At the northern end, there is another Ring of Invulnerability. The opposite end holds a Shadowsphere.


To be Added

Single-Player Stats


HereticStatIcon Difficulty Level
1-2 3 4-5
GargoyleIcon 9 9 9
FireGargoyleIcon 4 11 11
GolemIcon - - -
NitrogolemGhostIcon - - -
NitrogolemIcon - - -
GolemGhostIcon - - -
UWIcon - - -
UWGhostIcon - - -
DiscipleIcon 9 9 12
WeredragonIcon - - -
SabreclawIcon 14 18 20
OphidianIcon 12 21 29
LichIcon 3 4 4
MaulotaurIcon 1 1 2
SerpentIcon - - -
DsparilIcon - - -
Total 52 73 87

Weapons and Ammo

HereticStatIcon Difficulty Level
1-2 3 4-5
GauntletsSprite 1 1 1
CrossbowSprite 1 1 1
DragonClawSprite 1 1 1
HellstaffSprite 1 1 1
PhoenixRodSprite 1 1 1
FiremaceSprite - - -

HereticStatIcon Difficulty Level
1-2 3 4-5
WandCrystalSprite 17 17 17
GeodeSprite 1 1 1
EtherealArrowSprite 19 16 16
EtherealQuiverSprite 1 1 1
ClawOrbSprite 23 18 18
EnergyOrbSprite 1 1 1
LesserRuneSprite 23 17 17
GreaterRuneSprite 1 1 1
FlameOrbSprite 17 11 11
InfernoOrbSprite 1 1 1
MaceSphereSprite - - -
MaceSpherePileSprite - - -


HereticStatIcon Difficulty Level
1-2 3 4-5
CrystalVialSprite 57 51 46
QuartzFlaskSprite 15 8 6
MysticUrnSprite 1 1 1
SilverSheildSprite 1 1 1
EnShieldSprite 1 1 1
TorchSprite - - -
MapScrollSprite - - -
BOHSprite 2 2 2
ShadowsphereSprite 2 2 2
TomePowerSprite 1 1 1
InvRingSprite 2 2 2
WingsSprite 3 3 2
ChaosDeviceSprite 1 1 1
EggSprite 1 1 1
TimeBombSprite 8 8 8

Multiplayer Stats

To be Added


To be Added

External Links

Heretic - Episodes & Levels
Episode 1
City of the Damned
The DocksThe DungeonsThe GatehouseThe Guard TowerThe CitadelThe Cathedral
The CryptsHell's MawThe Graveyard
Episode 2
Hell's Maw
The CraterThe Lava PitsThe River of FireThe Ice GrottoThe CatacombsThe Labyrinth
The Great HallThe Portals of ChaosThe Glacier
Episode 3
The Dome of D'Sparil
The StorehouseThe CesspoolThe ConfluenceThe Azure FortressThe Ophidian Lair
The Halls of FearThe ChasmD'Sparil's KeepThe Aquifer
Episode 4
The Ossuary
CatafalqueBlockhouseAmbulatorySepulcherGreat StairHalls of the Apostate
Ramparts of PerditionShattered BridgeMausoleum
Episode 5
The Stagnant Demesne
Ochre CliffsRapidsQuayCourtyardHydratyrColonnadeFoetid Manse
Field of JudgementSkein of D'Sparil
Extra Episode
Fate's Path
Raven's LairThe Water ShrineAmerican's Legacy

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