Clint has the second easiest fight after Ivan, his shadow element allowed him to blend in with the shadows of the surrounding rocks and even hide in the shadow of the rock snake!
In this state, he was immune to physical attacks to a certain extent, and only elemental attacks would be able to deal real damage to him which the rock snake wasn't capable of.
Clint had blended with the shadows in the tunnel and used the shadows of the boulders and even that of the rock snake to attack it! Tearing at its stone scales like an invisible claw. The shadows were able to slip through the cracks of the snake's scales before pulling them out.
The snake had been very miserable, wriggling its body like a worm that got salt sprinkled on it as it searched for what was pulling its scales and the human it was planning to attack.