Rinpoche was teaching from the short text of Patrul Rinpoche, Victory over the Maras.
Generally are 4 main types of Maras or obstacles: 1) Mara of Kleshas (negative emotions), 2) Mara of Aggregates (self-clinging), 3) Mara of the Lord of Death (impermanence), 4) Mara of Devas (complacence), and their subsections and inner, outer and secret categories. The true freedom is to become free from these.
Photo thanks to Francoise Guillot.
Video will follow later.
For more information, visit: https://www.kcl-heidelberg.de/