Hi,
ok, very interesting talk indeed.
To achieve this, you'll need to become an expert and seasoned developer, there is not much more to it really
basically, you are witnessing the best of breeds, so there is no real shortcuts to this, unless he's willing to share his code.
to reverse engineer his work, you need to follow his timeline on how he explained his approach, and you need to follow that.
- move around with no animation
- do a simple tilt
- start making walk cycle with few keyframes
- blend poses based on context.
Each of these points above should be taken individually and one step at a time, I would recommand that you make specific threads on each of your struggle, instead of one long threads with multiple topics. As always, I encourage to divide your tasks into small digestable chuncks to avoid getting frustration and instead promote small rewarding steps with a clear long term goal ( which is learning Unity and PlayMaker, not making just that character controller).
Feel free to ping me when you make these threads and if you don't get a reply. I found this talk very inspiring and very well detailed ( though without working sample, which is understandable in a way... this is quality stuff indeed)
Bye,
Jean