Instructions
Load the "Sonic's Ultimate Genesis Collection" game. Wait for the game selection screen to appear.
Highlight the first Sega Genesis game in the list, then press "X." A screen appears telling you how to play the game. Press "Start."
Wait for the "Sega" logo to appear on the screen, then press "Start" and select "Quit."
Scroll to the next game in the list and select it. Quit the game after the Sega logo appears. Repeat this process for each game in the list to unlock the Blast Processing Trophy.