get a hitman hired plug him like his victims and bury him alive even if mc isnt there at least get the hitman to take some pics to know the deed is donePerhaps in the next release. It seems as though that release will take them back home for the weekend. But we don't know how far into the weekend's adventures it will get. All we know is that The Pupster (if we authorized him earlier) is supposed to contact the MC while he is back home. My guess is that we will NOT get a final scene in the Klaus resolution, but it will be set up for the following release.
Since every scene in this game is seen through the eyes of the MC, he will have to be present for US to see what happens. Don't know if the developers will do that. One good way to handle that would be to have the MC see Klaus being dragged into an SUV (black, of course), never to be heard from again; leave it to our imaginations as to what happens.