Item description:

for the moss Protector of the Realm save, just complete the last section without dying to get 3 gold trophies.

for the all Relic Dust and forgotten fragments save just finish off the abandoned town chapter and pickup the last relic dust and fragment to get all collectible related trophies, they should pop up.

you can use the chapter select to mop up the rest of the trophies after, just do one of each and they should unlock.

for a location of the last fragment and the relic dust use this video here to find them.