The screenshot I'm looking at depicts an official from the chest up, with an arm offscreen (which I'm presuming belongs to a player) taking a billy club to his face. The UI elements in the screen indicate that players will have their choice of weapons with which to mete out justice, including their fists, the aforementioned truncheon, a knife, and a submachine gun.

According to the Neoseeker story I grabbed this from, The Incorruptible Warrior is pretty much a standard MMO, themes aside. You'll grind for gold, experience, loot, and the like. It's times like this that I wish I could understand Mandarin.