The old man still has a few tricks, with robotic limbs and eyes, augmented brain, heart, liver and lungs. He does, however, have his weaknesses. Smoking has become a vice of choice, and due to the excessive amounts of Augs and his age, he must have nigh constant doses of neuropozyne or else his body will go into shock and reject his implants. Don't let that fool you, he is still as deadly as any assassin could be.