101Leafy researched the games.
Giant Tusk

Made of high-density bone and little else. The quality of the material used is key.
| Class | Lance |
|---|---|
| Rarity | 9 |
| Attack | 552 |
| Slots | 2 |
| Price | 75,000z |
Upgrades
| Upgraded from | Barbarian Tusk |
|---|---|
| Upgrades into | Brutal Tusk |
Can also be made new at the smithy.
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 748.
Materials
Hvy Monster Bone ×5, Massive Bone ×5, RobustWyvernBone ×8, ThkBullfangoPelt ×5