I've stripped a bunch of wall paper. I bought a steamer, used the enzyme paste stripper stuff, and a perforator. I'd start with just the steamer. If that didn't loosen it, I'd perforate it and soak it with the enzyme stuff, then steam again. It's a messy messy process. If I had it to do over again, I'd burn the house down, and get insurance to build me a house without wall paper.