Complex sentence: Steam offered three promotional "The Witcher 2" items for "Team Fortress 2", consisting of a hat of hair, a sword and a necklace, which were limited to the game's Scout class.
Split into simpler sentences: Steam offered three promotional "The Witcher 2" items for "Team Fortress 2". These were a hat of hair, a sword and a necklace, which were limited to the game's Scout class.