This is only going to be part one of my feedback for the new guns added, because I've only tried out 7 of the many different guns available.

-Arcana: I was a little underwhelmed by the Arcana. There was no problem with its firing speed, but it's a fairly weak gun.
-Blitz Needle: Just the same as the regular Blitz Needle. No problems found.
-Gilded Griffin: Very powerful, nice firing speed.
-Grim Repeater: Great firing speed, nice attack damage.
-Hail Driver: Simple, yet effective.
-Magma Driver: This is a nice gun with a great firing speed, but it's a little strong.
-Neutralizer: It's a really strong gun, but a little bit over powered.

That's all I have to say for right now. I'll add another thread or expand this one when I'm done reviewing other guns/armor.