Would it be possible to put TTT in halo?

If you don’t know what TTT is i mean Trouble In Terrorist Town. A Fan-Made GMOD gamemode where everyone spawns with only one life and tries to figure out who are the traitors.

I’m thinking about trying to make a gamemode and map to go with it, but i want to know if its even possible. The things i would like to know if possible is:

  1. Is it possible to make the infection look like everyone else and be undetected?

  2. Is it possible to hide the killfeed?

  3. Is it possible to make it so that everyones crosshairs would turn red no matter if it was a teammate or a Traitor?

If i am unable to do any of those three things i can’t make the mode.