Score the walls. You can accomplish this in one of two ways: with coarse sandpaper or with a wallpaper-scarifying tool. The easier and quicker of the two methods is the wallpaper-scarifying tool. The more scores you make, the quicker it is to remove the wallpaper.
Spread an enzyme-based gel remover over your wallpaper. Be sure to put the gel over the areas that you scored so it gets under the wallpaper and dilutes the glue.
Blast the walls with steam from your iron or a garment steamer at the top of the wall. This will loosen the paper and make the removal process quicker.
Edge a broad knife between the wallpaper and the wall at the top, and peel it back carefully.
Continue to peel the wallpaper from the top down, using the knife when necessary, to completely remove the wallpaper from your walls.