Me and my friend are playing right now and are trying to find the answer to the same question. Although we, as I mean me and my friend, haven't beat the game ourselves yet I have found an article on escapistmagizine.com containing this paragraph written by Tom Goldman posted on 24 September 2009 8:48 am,
"Borderlands is not going to be a quick run through the desert if Mikey Neumann, Creative Director at Gearbox Software, is to be believed. Neumann has played to level 50 twice, and says that it took him 100 hours the first time, and even more the second time because he was trying to complete all of the game's missions."
I hope I have answered your question, and if you'd like to read the article yourself its at: www.escapistmagazine.com/news/view/94957-Borderlands-Replay-Features-Will-Keep-You-Busy
Enjoy
Borderlands 2 has long since been released.
Borderlands 2 was released on September 18th, 2012.
Borderlands 2 is out now.
it took me 12 hours to complete
yes borderlands 2 is a very enjoyable game
I completed it in about 2 days
No, Kreig is an add-on character for Borderlands 2.
It's not necessary, no.
Borderlands 2. Rust is alpha and does not get anywhere right now
The plot of Borderlands 2 is a continuation of the plot of Borderlands 1, you meet some old faces and learn some new things about the events of the original.
Around 2 hours.
about 2 years.