use any map that fits, the game mode would allow you to select any pistol (includes skins players have set to default) and defaults to knife. no primary slots or selections. you only have one bullet in the gun. you get 1 bullet every time you kill a player. this game mode would make deagles overpowered when it comes to headshot masters, but would also reduce pistol spammers and give knife users a place to hone their skills. bullets reset to 1 if you die, just like in the other game modes. other then the weapon selection limits, i think that a new achievement coin should be available if players can win Top 3 players 10 times in a row (this is optional). Aside from all the specifications above, the game spawns and teaming rules are equivalent to Free For All. not sure how this game mode would work, but i think it would be interesting to see, seeing as there are similar gamemodes in other First Person Shooter games.