To summarise, all you need is the correct drill bit - in this example, a straight shank tile drill bit was used to first drill through the tile and later, a mansory drill bit for the wall behind the tile. The tip is to keep the bits cool by dipping in water every now and then.

As a side note, Bosch has replaced their Glass & Tile Drill Bit with their Ceramic Expert Drill Bit (CYL-9).