Fun mechanics, questionable design choices

Okay, so I do find parts of this game enjoyable. The shooting works just fine, and bouncing on cars and grinding on rails is fun as well. The promblem for me arises with how these mechanics are used. For the missions where you have to protect the vat while making boosts at the base, the game wants you to stay close to the vat to protect it from the OD, but also wants you to stay off the ground and keep moving so they don't kill you. How am I supposed to stay close to this thing, but also keep moving around quickly? I can't do both at once. It's things like that throughout the game that send conflicting messages about what you're supposed to do that bug me. I can see why some people like this game, but it's just not for me.