LGG3: I need a certain contact to always ring my phone regardless of sound profile

[Guyzer]

I have a job where when I go to sleep I put my phone on silent, but I need an emergency contact to get a hold of me at anytime. So i need this contact to ring regardless of my sound profile. any input would be appreciated. I will get an app if I have to but it would be nice if I can do this with some basic setting.

I already tried changing the default ringtone but that didn't do it

edit:

so I guess I can set the default ringtone to a mp3 with no sound, then any other ringtone for the special contacts

also I have tasker but have no clue if it could do this