Originally Posted by
Anethia
x2 Eva Kila+2, twilight knife (but that comes later), auric dagger(enhances DUAL WIELD effect 5%), charis necklace (enhances dual wield effect 5%), charis feather (dex+4, increases critical hit rate) and any charis +1/2 you can get your paws on (+1 body gives 7% dual wield effect, +2 body gives 10% I think. Plus bonuses to pretty much every other stat, trait, and JA you'll use).
atma of the voracious violet (enhances double attack: major, TP regain: major)
Atma of razed ruins (dex increase: major, increased critical hit rate: major, increased critical hit damage: major)
Atma of the sand emperor and/or atma of cloak and dagger (effects are similar accuracy and evasion: major)
Those are good ones to start with. There are other atmas you will learn more about, but these are great ones to focus on if you're just concerned with melee and evasion.