I noticed a lot of weapons in the game are ports of GetAmped 2 accessories. Here's what I found so far in the Alpha and Beta. If you play both games and found more accessories ported over in this game, feel free to post them here.

Katana:
Sealing Sword (Only one though instead of four)
Otenda Mitsuyo
Munechika

Nodachi:
Crimson Edge
Sacred Edge

Spear:
Dragonic Naginata (Miroku only, got remodeled into a different spear with the same colors)
Cudgel of Blue Sky
Chinese Spear
Prussian Kaiser (Acc's a giant axe, they squeezed it to make it more of a spear. http://wikiwiki.jp/oni_giri/?plugin=att ... 1%E4_0.png)

Twin Sword:
Dual Resonance

Bow:
Shekhinah(?)

Wand:
Default Enchanter weapon

Staff:
Stardust Wand

Axe:
Litchen Warder


If this game is going to get more updates, here's what I would predict.

Katana:
Onimaru
Flying Treasure Sword

Nodachi:
Dojigiri
Dainsleif (There is a Dainsleif spear in Onigiri, but the sword isn't there)
Woden Salve
7 Elemental Greatsword
Alastor's Rage
Molten Boulder

Axe:
Grim Grudge
Excel Driller
Rude Hatchet

Spear:
Ventura Valor


Twin Sword:
Twin Blade -Moon-
Luminous Crusade
Spite of Devils
Vicious Rhizome

Bow:
Lightning Arc
Blazing Arc
Artemis Arrow

Wand:
Miracle Transforming Stick
Icicle Wand
Ignis Wand
Lunatic Tears

Staff:
Perkunas Wand
Staff of the Falling Blossoms
Seraphic Cross

Bumping because this is an interesting way to find cameos and lazy ports.

I wouldn't be surprised if we see these pop up.

I didn't see anything from Cosmicbreak yet in the PVs or betas though, but I wouldn't be surprised either. There's also the basic katana weapon from GetAmped 2 as a katana early in the game, but I can't tell if it's an actual port or a remake based on that.