The Williams Pinball: Volume 2 Add-on for Pinball FX3 has 3 achievements worth 15 gamerscore.
Meet all pinball partiers at the Cosmic Cottage on The Party Zone™ table. (Single player only)
Sink a ship on The Black Rose™ table! (Single player only)
Steal a saucer and start the Attack Mars mode on the Attack from Mars™ table. (Single player only)