The Hammer of Infinite Fate Add-on for Brütal Legend has 9 achievements worth 90 gamerscore.
Run down 20 animals in the Deuce with the Coiling Maw equipped.
Kill 20 Tainted Coil units with the Disgorger.
Kill 20 Drowning Doom units with the Eye of Sorrow.
Make out with Ophelia while wearing the Mountain Man Threads.
Kill 15 enemies with a Metal Beast while wearing the Zaulia Threads.
Play a multiplayer game on all Hammer of Infinite Fate multiplayer maps.
Win 10 games on Hammer of Infinite Fate maps - ranked or vs. the Brütal AI.
Chisel four Razputin heads onto Mt. Rockmore.
Visit the grave of a fallen hero while wearing the Black Metal Threads.