101Leafy researched the games.
Barbarian Tusk

Spear popular with rougher hunters. Also called a "Skull Lance."
| Class | Lance |
|---|---|
| Rarity | 7 |
| Attack | 506 |
| Slots | 1 |
| Table price | 55,000z |
Upgrades
| Upgraded from | Hard Bone Lance+ |
|---|---|
| Upgrades into | Giant Tusk, Heavy Bone Gunlance |
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.