From that one kick that slams his face onto the ground, Havel snapped out of his sorrow from the loss of the woman that got killed brutally by Pati. His survival instinct immediately kicks in allowing him to focus back on reality.
Pati has given him two options, and it's obvious which one he should choose.
With the other option being him being crucified as an example in front of the other survivors, Havel knows that these options are nothing but a threat from Pati. There's no one to prove for, it's not pretty smart for Havel to go against Pati and he knows it.
Spitting blood on the ground, Havel slowly stands back up again.
"Fine, I'll tell you everything. But do I have your word to not kill me after I tell you everything?"
Upon hearing this, Pati walks back to the chair before sitting back on it again.
