1.) To join the private server - you must join the discord: https://discord.gg/xp5fUNq
2.) Regarding team killing - it's allowed however without valid reason can be punished.
3.) K.O.S is absolutely fine (MTF vs D-Class or Chaos vs Scientist) BUT they may surrender.
4.) Absolutely no teaming of any kind with SCP's.
5.) Mass team killing and hacking will ALWAYS be an instant ban.