I was wondering.. which normal damage inflicting guns compliment swords the best? Which has the most DPS?
I believe the only 5* normal damage guns are:
1) Valiance
2) Neutralizer
3) Iron Slug
4) Supernova
Now, the Neutralizer and Iron Slug don't look/sound that appealing, but I'll consider any comments/help.
My Criteria:
1. Turrets can be a problem for a melee fighter, and you might think of using a gun.
2. Beasts and Gremlins (maybe Fiends) tend to dodge gunfire. So I may not want to use a gun on them. Unless it kills them in one attack (autogun series), or it's fast enough to hit them before they dodge (Iron Slug/Callahan).
3. Everything else can be put to the sword.
So we'll judge the guns in light of that.
1) Valiance is the average gun. Bullets provide a slight knockback away from you, so it's useful to keep a small group at bay. It's very easy to use compared to the other guns on your list.
2) It has slow bullets but do not expand. Charged shot sets up a bomb on the enemy detonated by normal shot. Steep learning curve. Usual rhythm is charged shot, shot, charged shot, shot, repeat. Bad against gremlins, and slimes are easy to sword so I wouldn't recommend the Biohazard over it. (Biohazard has poison chance though.)
3) Iron Slug is bad because you don't want to sit still while you're shooting turrets (unless there's only one of them). The advantage of iron slug over the others is a guaranteed "flinch" that stops an enemy attack. But you'd have to stand still while shooting it.
4) Supernova (or Polaris) is pretty good, it just takes a while to get use to. Exploding Supernova bullets do more damage than the Valiance per shot, but the knockback mechanic can cause lower DPS overall if used improperly. IMO Polaris is a superior choice because 2/3 of the turrets are weak to elemental (and 1 of them is neutral).