Your swords are solid --- piercing, elemental, and shadow are all there. Upgrade the TSB, and then upgrade everything to 5-star. You might consider trying a Brandish-line sword at some point; you might find that you prefer it to the Sealed Swords (or you might not).

Your guns are solid --- piercing, elemental, and shadow are all there, and you've collected a few really different styles. You have a lot of elemental, and I find the Hail Driver difficult to use, so maybe hold back on upgrading that Cryo.

Shivermist Buster is a common first bomb. It's especially useful against Vanaduke, especially when it's 5-star. In general, experienced players seem not to use it much elsewhere, because freeze interferes with kiting and knockback. If you play in parties --- especially non-random parties, with thoughtful people --- then consider getting Graviton Vortex or Electron Vortex. Ash of Agni and Voltaic Tempest are quite valuable. Nitronome is fun, but if you're not a serious bomber then you will probably not use it well.

My advice is to upgrade Ash Tail Coat to Skolver, to get the damage bonus and a little more diverse protection. But other people will tell you to upgrade to Vog Cub, to get a set specialized for FSC. Eventually you will want both (and Snarbolax), if you're into swords. Consider also getting offensive trinkets. A third weapon slot is extremely useful. In my opinion, a fourth weapon slot is quite unnecessary.

In FSC, Divine Avenger is great. You are more valuable to parties if you can offer either Shivermist Buster and Blitz Needle (or both). Your RJP set looks good. Your IMF set is fine, although you probably have some difficulty against the gremlins. When you get a third weapon slot, bring your Gran Faust for the gremlins and slimes.

Rss is one of bomber's main dps weapons. I pair mine with the electron vortex mentioned above. It shoots out 8 shards, piercing/elemental, and works well on everything. But as a dps type bomb, you'll want some sort of damage bonus and ctr bonus in your armour/trinket slot.

It's great in fsc. Hard to use against kats, a trojan killer, destroys zombies. Only thing I find this hard to use against is T3 slimes, with the longer attack range and turning ability. For rjp use, you might as well craft the ash of agni line for better dps. It comes from the fiery bombs.

Rss line only goes up to 4*, so it isn't expensive to craft. The 2* crystal bomb is only piercing, so not as useful. Upgrading it to 3* and using in a graveyard to get a feel for it.