The Playable Villain Pack Add-on for Marvel: Ultimate Alliance (Xbox 360) has 7 achievements worth 150 gamerscore.
Unlocked all the outfits for Magneto.
Magneto has spoken to Xavier.
Unlocked all the outfits for Doom.
Unlocked all the outfits for Venom.
Unlocked all the outfits for Sabretooth.
Doom has spoken with himself.
Sabretooth has been mistaken for Wolverine.