Complex sentence: Through the guidance of Shri Parameshwardas, Shri Madhusudandas became a master of Kundalini Maha Yoga, with the power to awaken the dormant Kundalini in spiritual aspirants, and to then guide their spiritual evolution from subtle levels.
Split into simpler sentences: Through the guidance of Shri Parameshwardas, Shri Madhusudandas became a master of Kundalini Maha Yoga. This would give him the power to awaken the dormant Kundalini in spiritual aspirants, and to then guide their spiritual evolution from subtle levels.