Note: The original game, Tornuffalo is playable without body tracking, no Vive Trackers needed. If you have 3 Vive Trackers, this DLC lets you launch the game in "Full-Body Action" mode, so you can kick, dodge and jump with your whole body. If you have only 2 Vive Trackers you can still play and kick even though the full-body mode is optimized for 3 Trackers.

Full-Body Action

Clip one Vive Tracker onto your belt on your back, and strap the other two tightly onto your feet.

The body tracking isn't perfect, but it still gives an impressive effect considering the limitations.