Peace Mr. Popat
Isa (AS) his primary objective on his return will be to settle the score with Dajjal.
Round up the world under Islam and rule
His actions will be how we learn from him. His life will become the role model of a follower of Muhammad (SAW). As he (AS) will be the best of those followers. Just like his earlier mission he was the best of the Jews by being a practitioner of the religion of Moses (AS) … on his arrival he will be the best of the Muslims of his time again by being a practitioner of the religion of Muhammad (SAW).
The only difference being the first time around he also bought a new message whereas the second time around he brings a new movement.