2 animation at once

I want to make robot that is (for example) walking and using a gun at once. I make that model in blender 2.7. Is it possible in Free version of Unity? If so, where can I find any tutorial? Thank you.

 

I think the easiest way is to make this animation (walk + fire) in an other software and then add it to Unity. I don't know if it's possible to combine 2 animations in the same time with unity but it seems complicated.

 

wouldn´t be easier to make gun, body and eye separately as objects with their own animations and then add to unity and pin them all together?

 

I've been trying to do this same thing. I'm no expert on mecanim, but after reading I've done i want to do more research on Animation Blending, Masking, and Layers. Using those 3 things in some way i believe would achieve the desired effect. If I had done this yet myself, I'd share, but I'm struggling with smooth animation myself. for ex. i think i could have separate animations of the top half of the body (top half in a layer) aiming the gun at different points in front of the player, and blend between these depending on camera angle to make the player aim the gun where theyre looking, while at the same time having a layer for lower body where they could be walking/running/idle. Whats getting me is that Animation State syncing is a pro feature and Idk of any workarounds. I'm trying to figure this out myself. (except with bow's and swords, not guns )

EDIT:
http://unity3d.com/learn/tutorials/modules/beginner/animation/animator-controller-layers

 

I feel very happy and confident to involve in this wonderful and valuable discussion
Thanks