This is more of a generalized solution.
You'll have to do this on Guitar most likely as Guitar is the only instrument that will have 3 challenges on pretty much every song.
Gold is the lowest possible standard for a challenge so this should be obtainable on the easier difficulties without too much trouble.
There is always a score challenge, this will probably be the most difficult as the Gold score is usually still high enough that the easier difficulties may struggle to reach that score.
There is usually a note streak challenge and this requires you to play flawlessly for X amount of notes, again if you are on the easier difficulties, should not be too hard.
The 3rd challenge could be anything and it depends on what you are playing, it usually focuses on solos, hammer ons, shaking guitar controller, banking star power etc.
If any challenges involve hammer ons or tap notes, you may be better off avoiding these songs as these will be harder on easier difficulties.
This trophy requires you to get at least Gold on all 3 challenges and it has to be done in a single attempt of the song.