According to the official listing on Gumroad, the Tier 2 pack includes:
Danny Mac Topic: Retopologizing a full character body (arms, torso, legs, hands, feet) using Blender. Tier 2: This specific tier usually includes the core video content, project files, and often a time-lapse of the process, serving as a middle ground between the basic tier and the high-tier mentorship/paint-over options.
Gumroad - Danny Mac How to Retopologize the Rest of the Body (Tier 2) highly rated, with users on FlippedNormals giving it a 4.3/5 stars
This is the crown jewel of the Tier 2 course. The armpit requires a specific "star" junction.