I actually have it on a list to add the High Frequency Blade from MGS.

Is the term Zangetsu an umbrella term used for different swords, or is it strictly that one sword? My Bleach trivia is scarce. :\

Burst Armor and Energy Armor. :)

I don't think I mentioned that we do have various foodstuffs in right now that act as low level potions. A lot of fruits and stuff.

Debating on making a public list of the game's inventory. Might help, although spoilers.