The Revenge of the Battle-Cars Add-on for Rocket League has 5 trophies - 2 bronze, 2 silver and 1 gold.
Win an Online Match with Backfire, Scarab, or Zippy
Equip a Topper and win an Unfair Bot Match
Win a game against All-Star Bots with a Decal equipped
Use the Standard or Accelerato Boost with Octane or Backfire while playing in Urban Central
Win the MVP award using Backfire, Scarab, or Zippy