Athena told you the code, and she'll repeat it when you're near the door. You have to use the coloured markers until they are Blue, Yellow, Cyan, Orange.
the one with general knoxx
Yes, you can find it somewhere in General Knoxx's armory.
Blue, Yellow, Cyan, Orange.
borderlands ends by you killing the destroyer and not getting into the vault. the armory ends by you killing general knoxx and blowing up the armory
Buy the Secret Armory of General Knoxx Download. It's on XBL and PSN.
It should, it works fine for me and my friends.
Yes, at various crimson lance roadblocks.
No specific location. Try searching around in the secret armory of general knoxx DLC as it will only appear in there.
The Zombie Island of Dr. Ned, the Secret Armory of General Knoxx, and Moxxi's Underdome Riot have all been released as downloadable content for borderlands. The final pack was Claptrap's New Robot Revolution.
I dont remember but I got it buy going to the mission screen and looking at the dscription for the armory assault mission the code sould be there.
Crimson Lance chests can only be found on the General Knoxx DLC areas, they can be found here and there, with the highest concentration in the armory itself.
Zombie Island of Dr Ned, Mad Moxxi's Underdome Riot, The Secret Armory of General Knoxx, Claptrap's New Robot Revolution.