From the publisher's website:
The Riddle of Steel Companion is the essential guide for Players and Seneschals alike. The Companion offers new character creation options, additional Skills, Gifts and Flaws, revised Spiritual Attribute mechanics, rules options and expansions, as well as a Game Mastering section including several new monsters from myth and legend, World building guidelines for generating a detailed setting for The Riddle of Steel, and adventure hooks to help when designing campaigns. This supplement has something to offer everyone that plays The Riddle of Steel Role playing game.
- Completely revised Skill and Spiritual Attribute Sections.
- Many new Character Creation Options, including a new point based system, along with many new Gifts and Flaws.
- Articles on Tactics and World Building in TRoS.
- Variant Damage and Encumbrance mechanics.
- Voices and Prophecy-A faith based mechanic for TRoS, allowing players to create Prophets, Holy Men, and the Chosen of the Gods.
- The infamous TROS Caravan Adventure, complete with pre-generated characters.