We need the following sounds for the human soldiers when they wear light armour, medium armour or no armour at all. The sounds don't include any oral noise as they will be shared by both the female and male human trooper.
Stepping on a "regular" surface (e.g. concrete). (≥3 versions)
Stepping on a metal surface (e.g. tread floor). (≥3 versions)
Stepping on sand. (optional; ≥2 versions)
Stepping on snow. (optional; ≥2 versions)
Jumping. (≥1 versions)
Landing soft. (≥1 versions)
Landing hard. (≥1 versions)