101Leafy researched the games.
Diablo Destroyer

An Axe made from two types of Diablos. One hit splits earth and crushes mountains.
| Class | Great Sword |
|---|---|
| Rarity | 7 |
| Attack | 1152 |
| Affinity | -30% |
| Slots | 0 |
| Price | 75,000z |
Upgrades
| Upgraded from | Sword of the Diablos |
|---|---|
| Upgrades into | King Atillart Sword |
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 680.