Hi, I'm new to unity and I'm trying to do a 2D platformer, I used the 2d Rigging and put all the bones in place. I'm wondering if Unity can mix the animation. Like the walk animation is independent from the animation of the arms.
If you have a walk animation and another animation that uses the arms, you can put them each on a different layer and use an Avatar Mask to determine which bones are affected by each layer. Most likely you'd want Walk on layer 0 with no mask so it affects everything and the other animation on layer 1 with a mask to only affect the upper body. Then you can just fade layer 1 in whenever you want to play an upper body animation.