OSRS Boss Gear & Inventories

Corporeal Beast

Combat level 785 · 2000 hitpoints

The spirit shield boss. 2,000 HP, halves all damage from non-spear weapons, and spawns a dark core that heals it. Drops the Spirit shield, Holy elixir, and the Elysian/Arcane/Spectral sigils.

Requirements

• Summer's End (Corporeal Beast lair)
• ~90+ combat
• A team, solo corp is expert-only
• SPEAR REQUIRED

Pointers

• HE HALVES DAMAGE FROM EVERY WEAPON EXCEPT CORPBANE ONES, ON STAB. A Zamorakian spear or Osmumten's fang is mandatory. The Zamorakian HASTA is named on the wiki as a spear that is NOT corpbane, so it takes the full 50% penalty. A Scythe does HALF damage here.
• The dark core spawns and heals him. Someone must kill it immediately every time.
• Protect from Magic. His magic attack is the most damaging and most frequent.
• He drains stats aggressively on hit. Bring restores, not just prayer potions.
• Solo is possible with a Dragon warhammer + spear but takes many minutes; a team of 4+ is standard.

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: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:spec (sim): a carried special-attack weapon PROPOSED by `specPlan` (specchoice.js), which prices every SPEC_ATTACKS weapon that deals damage or drains defence on top of the bag solved without one, and KEPT by `judgeSpecArms` only where the composed bag with it beats the bag without it under `compareScores`. The row's `kpt.specWeapon` carries both arms.
• derived:travel (sim): travelPlan(): the way IN, ranked out of the derived transport graph against this account's own unlocks, rather than copied from whatever a human typed. The way OUT is a separate channel (`ruled:escape`) because it is a typed choice, not a ranking.
• 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.

Corporeal Beast strategies on the OSRS Wiki