This seems to indicate that they only exist as a default fallback weapon in the game's coding, and probably explains why they are unavailable if any other weapons are possessed. The game's console will display an error message about the player not owning any weapons before changing the player to use the fists. In that case, they will unconditionally appear the same as the player's berserk fists in single-player mode. Like other weapons in SnapMap, the appearance of the fists is dependent on the player's configured suit of armor, unless the map author has specified to override that setting with the Praetor suit. Glory kills will be automatically initiated if the player attacks a staggered monster with the fists, as if though the player was berserk or had explicitly pushed the glory kill key. Well-timed alternation of punches from either side against minor enemies such as zombies and imps can prevent them from retaliating. It is possible to throw punches with both of the player's arms the default fire button or key will punch with the right fist, while the alt-fire button or key will punch with the left. The fists appear and behave in the same manner as punches thrown under the influence of the berserk power-up, but do much less damage. In order to equip the player with the fists, it is necessary to set the player's loadout to a configuration with zero weapon slots - it is impossible to use the fists while any other weapons are owned. The fists are a weapon in Doom (2016) which are exclusive to SnapMap. This article is about the weapon in Doom (2016). For other versions of this weapon, see:

Doom 2016 snapmap tutorial