Slime Seas Greatsword Build
Optimal Greatsword build for King Sinbad, Ogre Lord, and mid-late Slime Seas progression with Thornblade and Doomblade.
Greatsword Power Spike
Greatsword mastery becomes S-tier at level 160 when King Sinbad drops Thornblade — the weapon Sinbad wields during the fight at Sinbad's Keep (Island 6, The Dunes). Single-target burst deletes 15,000 HP faster than Katana combos once Copper Novice and Thorn armor sets (from Sinbad drops) stack with Greatsword stance passives.
This build carries through Ogre Lord at level 255 (45,000 solo / 90,000 trio HP) with Doomblade chase at 0.51% and remains competitive at Monarch Statue until Amethyst Avenger (0.17%) drops. See Sinbad guide for phase mechanics.
Race & Gear Path
Best races: Dragonborn (0.25%) for maximum burst, Oni (6–7.5%) for PvP-adjacent offensive passives, Lunarian (2%) as realistic Fabled target.
Gear progression: Iron Novice from Rima → Copper Novice + Thorn from Sinbad → Steel Adventurer crafted from Ogre Horns (41.58%) → Shadow Steel from Sigil Fragments (42.02% Monarch) → Igris pieces for min-max.
Weapons: Thornblade (Sinbad) → Doomblade or Gilded Leviathan (Ogre Lord, 0.51%) → Amethyst Avenger (Monarch, 0.17%). Details on weapons page.
Technique & Rotation
Greatsword technique priority differs from Katana:
- Charge attack damage — first investment at level 160+ when Thornblade equipped.
- Stance break — critical for Sinbad and Ogre Lord phase transitions.
- Armor penetration nodes — after Steel Adventurer set complete (~level 255).
- Execute finisher — Monarch Statue sub-10% HP burst.
Rotation pattern: charge → heavy swing → stance break skill → repeat. Avoid greedy combo strings that leave you locked during Ogre Lord slam attacks. SlimeSlayer Greater Power Potion (30 min) from active codes amplifies charge damage noticeably.
Boss Farm Schedule
Sinbad (160): Farm Thornblade and Thorn set until Greatsword stats plateau. Guild Headquarters unlocks at level 125 — recruit trio partners for faster clears.
Ogre Lord (255): Primary material farm. Ogre Horns at 41.58% feed Blacksmith Steel Adventurer crafts. Doomblade at 0.51% is long chase — use Superior Luck potions during dedicated sessions.
Monarch (360+): Trio recommended (300,000 HP). Amethyst Avenger 0.17% BiS upgrade. Route details on boss routes and Berserker build for trio DPS pairing.