My first step to attaining this goal is by implementing some sort of leveling system, equivalent to the many kinds you can find on Counter Strike Source (Zombie mod for example).
After each “kill” as hunter or maintaining alive as prop you get points. And with these points you can spend in a shop for custom hats, skins, taunts, and traces. Is this possible to make? If someone know anything like what I am asking for, please feel free to share with me!
Note that the things you buy in the shop won’t give you an advantage over other players, they are just there for the sake of appearance and status that you’ve earned a lot of points.