What about needing to have teshuva accepted by the parents/family since the crime robbed them of their child. This component of teshuva would probably never be attained.
I’m sure he will be punished beyond the scope of any our imagination and deservedly so..he is a hanious monster and there is nothing redeemable about him. His savage act goes beyond human itelect.
The heavenly court will see to his punishment and I hope it is the most severe yid or not…