Item description:

Go to level number 3 - The Docks, i left one race, one side quest and one creation tornado in that level, complete them and you will receive the trophy for completing all of these activities.

To unlock the last character, you will need to go back to level 8 - Ninjago City Downtown where the last character token is located, to unlock it you will need all 220 gold bricks which you now have if you completed the 3 activities mentioned above. To find the token simply turn around once the level has loaded and go to the right alongside the beach, you will find the last character token which will unlock the trophy for collecting all character, for completing the game 100% and the platinum trophy if you already had all other trophies.

Just play around with the save to see if other trophies pop.