Sledgehammer for a start.

Masonry blade on a worm drive saw. With a negative airflow machine and a whole lot of plastic set up.

I wonder if the same guys who remove tile from a concrete floor without dust can get rid of tile from a plaster wall? The guys I used to remove 1,000 sq ft of tile without ANY DUST used a DustRam system hooked up to huge vacuum system in their truck outside via hoses. Just a thought. May be totally irrelevant.

You’re lucky if the tile is still set. Our retiling came after pieces started falling off giving us a perfect start place to start removing the rest with a chisel and hammer.