From RT.
It's actually really amazing footage - he totally headbutts the drone and he survives..! He walks away very normally and goes to hide in some trees.
This makes some sense - a high quality helmet can stop a direct .776 bullet to the head one time.
None of the shrapnel in one of these drones likely has that kind of force.
I imagine that he has big wounds from shrapnel on his shoulders, but I really don't know. Who knows, really... It depends on so much and there's just no information.
Truly, amazing footage.
I hope we can get the full story someday.