Think the Runescape 99 Mining grind. But now take mirthril ore and replace it with a red ore called nitra. This ore is used to call in ammo packs for reloading, like how you reload on easy-to-make mithril armor after getting scammed for rune trimming in the wildy.
The guns are like bows in runescape, you'll need ammunition. You'll start with ammo, but you can get more from the mithril ammo drops.
When it comes to smithing, the 99 grind isn't as real, but you can make things called overclocks, which is like trimming your rune armor. But this time it actually does something, like extra defense aganist dragons or guns that make you hate barrels instead of bugs.
8/10 would grind for 99 Mining again.