Stats
- Attack
- 988
- Affinity
- 0%
- Rarity
- 6
- Slots
- 3
- Element
- Thunder 420 (hidden)
- Defense
- +10
- Sharpness
- Red 110 · Orange 120 · Yellow 40 · Green 50 · Blue 80
Upgrade path
Crafting materials
Total cost of Grandrock II: it comes from a 8-step upgrade chain, and crafting the final weapon means going through all of them. The total below sums the whole tree.
Materials total
Each material appears once, under its main source: monster, then gathering, then combining.
Dropped by monsters (11)
- Quality Bone ×32Radobaan (carve), Kestodon (reward), Girros (reward) · also: gathering
- Monster Hardbone ×10Black Diablos (reward), Diablos (reward), Odogaron (reward) +8
- Monster Keenbone ×8Paolumu (reward), Barroth (reward), Raphinos (reward) +8
- Monster Bone M ×7Barroth (reward), Tobi-Kadachi (reward), Jyuratodus (reward) +1
- Monster Bone+ ×4Great Jagras (reward), Kulu-Ya-Ku (reward), Tzitzi-Ya-Ku (reward) +5
- Sturdy Bone ×4Radobaan (carve), Kestodon (reward), Mernos (reward) +5 · also: gathering
- Elder Dragon Bone ×4Kirin (reward), Nergigante (reward), Xeno'jiiva (reward) +4
- Monster Bone S ×3Jyuratodus (reward), Kestodon (reward), Mernos (reward) +6 · also: gathering
- Monster Bone L ×2Paolumu (reward), Tzitzi-Ya-Ku (reward), Anjanath (reward) +3
- Ancient Bone ×1Kestodon (reward)
- Dragonbone Relic ×1Radobaan (carve) · also: gathering
Gathered in the field (1)
- Boulder Bone ×2Wildspire Waste
Materials per step
1.Bone Bludgeon I (craft)
2.Bone Bludgeon II (upgrade)
3.Bone Bludgeon III (upgrade)
Monster Bone M ×2, Ancient Bone ×1
4.Fossil Bludgeon I (upgrade)
Monster Bone L ×1, Monster Bone M ×5, Boulder Bone ×2
5.Fossil Bludgeon II (upgrade)
Monster Bone+ ×2, Monster Bone L ×1, Sturdy Bone ×4
6.Fossil Bludgeon III (upgrade)
Monster Keenbone ×2, Monster Bone+ ×2, Quality Bone ×2
7.Grandrock I (upgrade)
Monster Hardbone ×4, Monster Keenbone ×6, Quality Bone ×10
8.Grandrock II (upgrade)
Elder Dragon Bone ×4, Monster Hardbone ×6, Quality Bone ×20, Dragonbone Relic ×1