101Leafy researched the games.
Fatalis Buster

Sacred weapon that enshrines Fatalis. "The land is its life and demands sacrifice."
| Class | Hammer |
|---|---|
| Rarity | 8 |
| Attack | 1040 |
| Dragon | 240 |
| Slots | 0 |
| Price | 100,000z |
Upgrades
| Upgraded from | Black Hammer |
|---|---|
| Upgrades into | Fatalis Demolisher |
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 726.