Thanks for the follow-up!
Sounds exciting 
Since you’re working on a game development project, first start by making the character!
You can check out this basic course:
Once you’ve set up your character, we can move on to adding your root motion animations.
You absolutely can! Like I explained before, you can adjust the transform of the root bone to affect root motion. Though perhaps what you wanna do is to actually rotate the pelvis!
Either way, feel free to get back to us if you encounter any issues once you get there.
However I wanna add that root motion animations are usually played with anim montages. If you like, you can also provide some context on how do you plan to trigger those animations and we can give some advices on how to handle them.
So, hope this helps! 