101Leafy researched the games.
Cutlass+

Dual Water Element Swords. Superior Sharpness and high Defense, but no Guard.
| Class | Dual Blades |
|---|---|
| Rarity | 5 |
| Attack | 224 |
| Water | 230 |
| Defense | +13 |
| Slots | 2 |
| Price | 5,080z |
Upgrades
| Upgraded from | Cutlass |
|---|
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 710.