The Bethesda Pinball Add-on for Pinball FX2 has 3 achievements worth 30 gamerscore.
Defeat a dragon on The Elder Scrolls V: Skyrim® Pinball table! (Single player only)
Reach level five on the Fallout® Pinball table. (Single player only)
Blast away your enemies with the BFG on DOOM® Pinball. (Single player only)