In the fourth DLC at the end.
Yes You can play Borderlands offline you can play with up to 4 people on split screen but if you have a ethernet cord you can play system link with two people
It should, it works fine for me and my friends.
Yes but you have to wait some time before you can fight him again.
Yep, 2 player offline split screen is confirmed.
If you mean can you fight your friends, yes you can, you need to enter an Arena, there are several to find, once in the Arena you can 'duel' with your friends.
Assuming you have the 4th Borderlands DLC, the Interplanetary Ninja Claptrap is the final boss.
Im pretty sure u can only fight it on online mode like Loa Shun Long.
Borderlands traditions tend to be mixed. Please specify WHICH borderlands you are referring to.
the creator of borderlands is Gearbox
they would fight alone
Borderlands 2 is out now.