Shakhal: Nice! Though I kind of miss the head-bob when the foot goes down; it added a lot of weight to its movement, having the whole body move makes it feel a lot 'stompier'. If you reduced the amount of arm movement on the 'before' animation a little you'd have a good pair of walk and run cycles.
@shakhal: I personally prefer the before robot more. I believe the bounciness of the new one can work, although there's still a bit of editing required on the placement of it's feet.
Thanks for the feedback. The robot doesn't have a neck so I take down the head-bob because it doesn't have any sense. Also, I have reduced a little the shoulder movement, increased the arm movement, corrected the leg movement and added the backpack movement.
Now it looks like this:
Before:

After:
