guys check this shit out!
Looks amazing, the animation is so smooth it doesn’t look like it is pre-canned. I think they are procedural or physics based.
But are you sure this is done in Unity? There is no reference anywhere I can find that say this is done in Unity.
The game is built on a custom in-house engine.
ohh i just realised that it isnt done in unity im sorry i was wrong…
No worries, this is a game development forum and it’s perfectly acceptable to talk about games not done in Unity 
so i have a question, does anyone know any tutorial that gives u to understand how script that procedural animation ?
or at least something smaller like terrain adaptive legs!please give me some help because i want to start learning procedural animation!
something like this :
At that level it isn’t really “scripting”, they writing their own code to handle it. It is probably much higher level than you will find tutorials for, you might find papers on it, but usually it is something that approached by folks who already have a programming background. Though I think mechanim may be able to pull off a fair amount of that with some work.
@zombiegorilla do you know any mecanim tutorial for IK ?