PoV Forren
It was surprising to see an opponent that was immediately aware of Diego's abilities' drawbacks, but even then, he didn't know their full potential, which is why he suffered the damage from the axe.
He was wise in trying to stab his feet, but he got too cocky and forgot to think of the nuances his impermeable ability grants him. For once, he can bend in extremely unnatural ways, such as folding his body in extremely unnatural ways, such as turning around his neck in a 180° angle, or his torso, or bending his back in ways humans simply can't, by choosing which parts will become impermeable and which will not.
'That's why no human soldier ever stood a chance against him. They all tried to deal with him as if he were a human just like them.'