Here is a little animation breakdown I did to show you my technic to animate character for games. Hope you'll enjoy it.
I'm using blender 2.80 for this animation and it was made possible thanks to Fin addon Bone layer manager : https://gumroad.com/l/STdb
He's currently working on a script and addon collection for 2.80 and he's one of the nicest blenderhead in the community. You can follow him here : https://twitter.com/FinEskimo