101Leafy researched the games.
Vacuum Striker

A Spear held by a legendary female hunter that was often called "The Janitor".
| Class | Lance |
|---|---|
| Rarity | 3 |
| Attack | 184 |
| Water | 270 |
| Slots | 2 |
| Price | 7,500z |
Upgrades
| Upgrades into | Hyper Vacuum |
|---|
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 750.
Materials
Pale Bone ×2, Rubbery Hide ×1, FlynMealPassReg ×2