Each of the four guards was wearing thick metal armor pieces on their bodies. Their shoulder guards had metal spikes coming out of them, and they wore metal knuckles with small spikes that they could use to deal more damage if they had to use their fists, but thanks to the system, a person couldn't gain the attribute boosts from two different weapons at once, only in cases where a person was holding two similar weapons, like two swords, two daggers … would that happen.
That led Reign and the others to believe that the knuckles were either there just to give them more options for battle, or they were a part of the armor they wore.
The metal pieces of the armor shielded their vitals mostly, the armor didn't go down to the legs and there was a big metal piece covering the front of the torso. The armor pieces were gray, with red lines that were seemingly spray painted.
They also wore metal helmets, and from what Reign could sense, all four were Tier III combatants.