If you prefer to watch a video instead of reading the guide, feel free to do so. There is a playlist that covers every trophy on my YouTube channel. If you'd like and subscribe or even become a member, it would mean a lot to this channel!
If this game has anything difficult or challenging to offer it's the time trials. It's recommended to use either Clockwork or Astro Smurf, or any other smurf that doesn't have a power-up related trophy. You'll likely earn even more trophies in this mode than the three listed below, but these three are the ones you should focus on. Finishing time trials counts as races for the in-game stickers.