How to get the Biker Boy Trophy
Once you start Chapter 4 in Final Fantasy VII Remake, you will very quickly be immersed in a very different gameplay with a motorcycle section, where we have to be to earn the Biker Boy trophy. Completing this section is not enough because you need to do better than complete it completely.
To get the Biker Boy trophy in this section, you must be congratulated by Jessie at the end. To earn this, you basically need to finish the section with 75% or more of your health remaining. If you don't, Jessie will congratulate you first and then say she's kidding. Finishing the level with 75% or more health will get real praise and even a special surprise from Jessie.
The motorcycle section of Final Fantasy VII Remake isn't too difficult once you get the hang of it, but maintaining that much health along the way can be more difficult. The Cyclist's basic enemies are easy to take down, as all you need to do is stand next to them and take them out with just a few hits. Drones will try to shoot you with a projectile, so pay attention to their laser sight to avoid. When you get close to them they will emit an electric wave, so stay far enough that they do and then take them out.
More annoying however are the stronger enemies of cyclists who drop firebombs at you. Two of these enemies will spawn at once, so make sure to get up close and attack and switch from side to side to be on the other side of where they are holding a firebomb at drop. At the same time, you have to watch out for the other rider further away to make sure that the firebombs they drop don't hit you either.
Eventually, you'll end up having a boss battle on your bike against Roche, which can definitely damage your health if you're not careful. He'll try to fire projectiles at you that you can dodge or keep again, but most of all make sure to dodge the one that comes after he charges him for even longer. When you get the chance, get close to him and start attacking, making sure to use your Spin Slash as well. It will hit you, but there's not much you can do to prevent it. It will then climb up the wall and lightning will come from the sky which you must dodge. After that it will crash into the road and create an electric wave that you must dodge before attacking it again.
Doing all of this can certainly be difficult to manage and keep your health above 75%. If you continue not to and still want the trophy, you can also do the chapter on Easy mode and still get the trophy.