Although he was not able to fully read Alex's mind and internal thoughts, he was still more than able to assume what he was thinking just from his actions and expressions alone, Moby feeling the same about most if not all of them.
For the sake of his friends, Alex was more than ready to risk his own life and disregard his safety, nothing in his mind seemed more important.
He withstood overusing and pushing his demon powers far past their intended limits when any other man would have simply given up from the beyond unimaginable pain, not to mention fighting with that pain still ravaging their body.
Yet, despite all of that, his opponent was just simply too strong, way beyond any level he could even dream of beating in his current state, he was doomed to fail even before the fight started.