- There are 9 weapons that have 374 of their attack stat as requirements, most likely all of those are the ones that will have upgraded versions in the shop.
- Every 3 of those 9 weapons have similarities between them.
- Ikutachi, Ishurai and Seitenweise look like they're made of wood, plus their upgraded versions all have wind element, so I find it very likely that these will require the wind pyroxene.
- Messer Agate, Divulcan and Schmidtore look like they're made of similar materials, plus the upgraded version of Messer Agate is shown to have fire element and requires the fire pyroxene. It's very likely that the other 2 also have fire element and require the fire pyroxene.
- Rust Device, Gravel Core and Metalisolidom look like they're made of robot parts. Seeing how the previous 2 groups work, it's likely that these will require a 3rd type of pyroxene, and that all 3 will have the same element.
- Since it's likely that there are 3 types of pyroxenes and that there are 3 advance quest areas, it's likely that each type of pyroxene is obtained in a specific advance quest area.
- Looking at the pyroxene elements and their respective weapons, most likely the wind pyroxene will be obtainable in the forest, the fire pyroxene in the caves, and the 3rd pyroxene in the desert. This is all speculation, of course.
- Since the original version of the new weapons all have the same requirement, there's the possibility that the strike weapons may all require 600 S-ATK, the shoot weapons 600 R-ATK and the technic weapons 600 T-ATK. No idea if it is really like this though.