Extract the .rar and copy the TF2HorselessHeadlessHorsemann folder into "Manhunt/data/skins/" Copy the HHHHeadtaker .dff and .txd files into "Manhunt/Modloader/Extra Weapons. You'll need PluginMH by ermaccer to install this skin and All Weapons In All Levels 2021 by Paulie Walnuts to install the weapon.