Removing wallpaper is a sticky mess that requires a lot of humidity and a liberal dosing of heat as well. It's obvious that the previous owners covered the walls with wallpaper rather than deal with a lot of the damage that was behind it from some shelving that must have been attached to the walls earlier. They also didn't completely removed the glue from one wall that obviously had an earlier wallpaper on it. That glue comes off feeling and looking an awful lot like snot.
With the wallpaper down, and the walls getting a good scrubbing, we still need to patch up parts of the wall before putting on a couple coats of paint. The boys compromised on a light purple (one wanted dark blue and the other wanted pink). I'm not looking forward to that either.