Assasin Armor Question.

Hello, i would like to know these terms please:

Shrouded Armor and NightStalker Armor. What do they mean?

Im sure they arent armor sets as in wikipedia they arent mentioned. If they are armor, could anyone tell me what materials do i need to craft them and where to find them? Thanks

Shrouded and Nightstalker armor were armor sets before armor was changed to the insignia system. Look for Radiant or Nightstalker insignias.

Shrouded - I don't know
Nightstalker is an Insignia for Assassin Armor http://wiki.guildwars.com/wiki/Nightstalker's_Insignia

"Shrouded" and "Nightstalker" refer to the insignias that are placed on the armor. However, "Shrouded" was removed from the game when the Insignia system became global; its new name is "Radiant".

To get armor with these bonuses, buy any armor set you like and add a Nightstalker or Radiant insignia to it; each armor piece can only hold one insignia. Insignias may be purchased from rune traders.

Ok thanks a lot! one more question:

Are Nightstalker and Radiant Insignias stackable?

Also, how many runes can you put into a piece of armor?

The energy bonuses from Radiant insignias are stackable. However, the armor bonuses from Nightstalker insignias only apply to the piece of armor that they are applied to.

Ok, what about the number of runes on a piece of armor?

Only one rune per piece of armor. You can have one rune and one insignia on the same piece, though.