It's possible to target a specific player with a specific Name/SteamID? Example: func_teleport that works only with me, and nobody else.
well, you could have a secrete button with a secrete pass code or something, but then again its a pretty big disadvantage to other players if you can just get teleported somewhere they cannot. Kind of defeats a lot.
Also, people can very easily decompile your map or debug it in singleplayer with sv_cheats and crack the secrets regardless, there is no point in adding stuff that only you will be able to find