What's a good three-star sword for a strategy of "Shield, and time your attack"?
What's a good three-star sword for a strategy of "Multiple hits for a good combo"?
What's a good three-star gun? What are the tradeoffs of the different three-star guns?
Troika/Khorovod and Firotech Alchmer II/III.
Others are just useless, no need to go talk about guns atm thanks to the balancing patch. Unless you want to use them for lols.... then I would suggest you try pretty much everything else. The only reason the original firo/cryo/volt are still useful is because they are now vial lite, it's such a pity that the devs developed the auto gun lines and upgrades just for it go to waste thanks for the patch.
In another note if you really want a multi hit sword then use night blade or tempered calibur, it's not gonna keep you alive for long though.