I went ahead and started another Norwegian wiki. That's the fourth wikia wiki I've started in Norway, the first being Elder Scrolls, second being Fallout, third being The League, and now Red Dead.
There are still a lot of kinks I need to work out. I need to get the wiki connected to this one so I don't have to re-upload all the images and such, as well as using interwiki links on our article pages. The css is already up, but there are some other MediaWiki pages that needs to be fixed. Thinking of implementing the achievement system, as I guess that's one way of attracting some active contributors.
But for now I'll still be writing the walkthrough for the missions as I finish them. If you're Norwegian and want a hand in this, contact me on my talk page here on Red Dead wiki.