I removed wallpaper from a kitchen and in some spots, the underlying paint came off as well. I have tried sanding, however it seems to take off more paint in some of the areas. I plan to paint the wall, and am concerned about uneveness and being able to see the spots where the paint came off the wall.
There's lots of info on here about this if you do a search. I'd prime it, then skim coat the bad areas with spackle or joint compound, then re-prime the skim coat areas. Then paint. Be sure and get the edges of the existing paint smooth by skim coating the edges, because they will show through otherwise. You can't sand them well enough.