OSRS Boss Gear & Inventories

Cave Horrors

Combat level 80 · 55 hitpoints

Mos Le'Harmless Cave. Low requirements, only 55 HP each, and the whole method exists for one drop: the BLACK MASK at 1/512, worth ~1.5m. Everything else is filler.

Requirements

• 58 Slayer
• Cabin Fever (Mos Le'Harmless)
• WITCHWOOD ICON if not praying Protect from Melee

Pointers

• A WITCHWOOD ICON blocks their screech, which otherwise hits you for 10% of your base Hitpoints level. You can skip the icon ONLY if you run Protect from Melee, which frees the neck slot for a proper amulet.
• They have a 30% elemental weakness to FIRE spells.
• Only 55 HP, so fast-firing weapons win: a toxic blowpipe or even a magic shortbow out-earns slow high-damage gear here.
• You can safespot them using the mushrooms and stalagmites in the cave.
• The Black mask (1/512, ~1.5m) is the payday; mahogany logs, nature runes and hard clues are the steady income.
• Bring a lit candle / the cave requires a light source to enter the tunnels.

What the sim brings here

Every worn slot and every inventory row below is the combat simulation's own output, at the style it ranks fastest for each account tier. Each line carries the channel that chose it: sim means the model solved it, and inherited means the value came through from the hand-authored loadout the solver starts from. Riding through a generator does not make a value derived, so those are marked rather than presented as the model's answer. A line marked unattributed carries a channel the model's own vocabulary no longer declares, so no word is put on it at all rather than one being read off the channel's spelling. Where the model has not answered a row, its own refusal is printed instead; where it has answered a row it doubts, the answer is printed with the doubt attached rather than withheld.

What each of those badges means

• derived:ascent (sim): an accepted coordinate-ascent move: betterThan() preferred this candidate over the incumbent under the row objective and band. The weapon+ammo+shield pairing and the crystal set arrive here too, because both are offered to the same acceptance test.
• derived:cheapestEqual (sim): cheapestOfEquals(): at budget, an exactly-tied cheaper item replaced the one in this slot. It changes the price and, by construction, not the score.
• derived:composed (sim): balanceInventory() sized this row from the derived supply menu. The menu enumerates CONSUMABLES and narrows by style, tier and price; it is not the authored bag.
• derived:empty (sim): the finished loadout leaves this slot EMPTY, and that is an ANSWER rather than a gap: a two-handed weapon forfeits the shield and a weapon that stores its own ammunition frees the ammo slot. Recorded so a null slot is never read as unprovenanced.
• derived:killMechanic (sim): KILL_MECHANICS: the item without which the kill cannot happen (the gargoyle finisher, a light source in a dark area), chosen out of the encounter's own stated disjunction after the account gate the source states, and reserved only where the loadout did not already satisfy the requirement worn or carried.
• derived:obtainable (sim): canonicaliseObtainable(): the finished loadout named a variant the model cannot state a route to, and this pass swapped it for the obtainable equal.
• derived:seedWeapon (sim): the weapon the ascent BEGAN from, taken off the dps-ranked weapon shortlist, or the forced weapon of a multi-start seed. Never off a start loadout.
• ruled:escape (ruled): escapeLeg(): the way OUT, taken from the typed per-tier table ESCAPE_PLAN and judged against the account, with nothing substituted and no fallback ladder. The ACCOUNT CHECK is a derivation; the CHOICE of item is not, so this is not a `derived:` channel. ESCAPE_PLAN carries no attributedTo field (PROVENANCE_BACKLOG: silent-and-unattributed), so this channel does not claim one either.

Cave Horrors strategies on the OSRS Wiki