Andar discovered a horrific fact about the clouds at this level, every punch he made brought him pain, and the pain did not cease, it only compounded.
Every hit he made increased the pain he felt until it was as if everything he knew was pain. His stubbornness was what made him attack in a frenzy because he was afraid that if he stopped the pain would freeze him in place.
This was the first time in his entire life to experience something like this. This was the sort of pain that would kill an average mortal man ten times over, and only his strong constitution was holding him in place.
Andar collapses as the pain overwhelms his senses.