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OSRS Boss Gear & Inventories

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The Leviathan

Combat level 798 · 900 hitpoints

One of the Forgotten Four. A ranged-distance fight against a burrowing sea creature that throws boulders and spawns a lightning-tile minefield. Drops the Venator vestige and Virtus pieces.

Requirements

  • Desert Treasure II
  • 90+ Ranged strongly recommended
  • 70+ Prayer
  • Awakened variant: 1157 combat

Pointers

  • It cycles Ranged / Magic / Melee attacks and telegraphs each. Flick prayers to match.
  • Boulders fall in a line; the safe tile is telegraphed by the shadow. Move before impact.
  • It spawns lightning tiles that spread. Keep a mental map of clean ground.
  • When it burrows and re-emerges, its next attack is guaranteed to land. Pre-pray.
  • It is weak to ranged and stays at distance for most of the fight, so melee rarely gets a window.

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.

max tier, ranged (Ranged is fastest)

Worn gear: 11 of 11 slots chosen by the sim.

  • Head: Masori mask sim
  • Cape: Blessed dizana's quiver sim
  • Neck: Necklace of rupture sim
  • Ammo: Ruby dragon bolts (e) sim
  • Weapon: Zaryte crossbow sim
  • Body: Masori body sim
  • Shield: Twisted buckler sim
  • Legs: Masori chaps sim
  • Hands: Zaryte vambraces sim
  • Feet: Avernic treads (max) sim
  • Ring: Venator ring sim

Inventory: 6 of 7 rows chosen by the sim, 1 carrying no channel at all.

  • Amulet of the eye sim
  • Ranging potion(4) x2 sim
  • Bastion potion(4) sim
  • Super restore(4) x14 sim
  • Saradomin brew(4) x3 sim
  • Cooked moonlight antelope x3 sim
  • Max cape ruled

Spellbook: Lunar. Grants Vengeance. Gave up Resurrect Greater Ghost.

Trip: about 20.74 kills in 37 minutes, limited by prayer.

mid tier, ranged (Ranged is fastest)

Worn gear: 11 of 11 slots chosen by the sim.

  • Head: Masori mask sim
  • Cape: Blessed dizana's quiver sim
  • Neck: Necklace of anguish sim
  • Ammo: Ruby dragon bolts (e) sim
  • Weapon: Zaryte crossbow sim
  • Body: Masori body (f) sim
  • Shield: Twisted buckler sim
  • Legs: Masori chaps sim
  • Hands: Zaryte vambraces sim
  • Feet: Avernic treads (max) sim
  • Ring: Venator ring sim

The model doubts this gear (tied with an identical item, so enumeration order decided): the neck slot holds an item the model cannot tell apart from an alternative the search could equally have taken, re-scored identical in this row's own bag. Enumeration order decided it, so the sim had NO REASON; that is not the same as the pick being wrong. SOLVED_GEAR_TIES names them.

Inventory: 5 of 6 rows chosen by the sim, 1 carrying no channel at all.

  • Amulet of the eye sim
  • Ranging potion(4) x2 sim
  • Super restore(4) x7 sim
  • Saradomin brew(4) sim
  • Zamorak brew(4) sim
  • Teleport to house (tablet) ruled

Spellbook: Lunar. Grants Vengeance. Gave up Resurrect Greater Ghost.

Trip: about 8.31 kills in 17 minutes, limited by prayer.

budget tier, ranged (Ranged is fastest)

Worn gear: 11 of 11 slots chosen by the sim.

  • Head: Masori mask (f) sim
  • Cape: Ardougne cloak 3 sim
  • Neck: Dragonbone necklace sim
  • Ammo: Ruby bolts (e) sim
  • Weapon: Zaryte crossbow sim
  • Body: Black d'hide body sim
  • Shield: Twisted buckler sim
  • Legs: Black d'hide chaps sim
  • Hands: Bandos bracers sim
  • Feet: Avernic treads sim
  • Ring: Venator ring sim

The model doubts this gear (tied with an identical item, so enumeration order decided): the body, legs, hands slots each hold an item the model cannot tell apart from an alternative the search could equally have taken, re-scored identical in this row's own bag. Enumeration order decided it, so the sim had NO REASON; that is not the same as the pick being wrong. SOLVED_GEAR_TIES names them.

Inventory: 7 of 8 rows chosen by the sim, 1 carrying no channel at all.

  • Amulet of the eye sim
  • Halibut x2 sim
  • Ranging potion(4) x2 sim
  • Bastion potion(4) sim
  • Super restore(4) x13 sim
  • Saradomin brew(4) x3 sim
  • Cooked moonlight antelope x2 sim
  • Ring of dueling(8) ruled

Spellbook: Lunar. Grants Vengeance. Gave up Resurrect Greater Ghost.

Trip: about 16.91 kills in 43 minutes, limited by prayer.

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: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.
  • 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.

The Leviathan strategies on the OSRS Wiki