Stark felt himself beginning to tire. His body had been strengthened by Dragon Bone Wine, and Alvin had even embedded a Rune in his chest, but nearly five hours of intense fighting were still starting to wear him down.
What was making Stark feel tired wasn't his body, but his mind!
Operating Mech Armor was incredibly mentally exhausting. The difference between Iron Man Armor and Ivan's Mech Armor was that Ivan's control system still relied on motion sensors, with his body driving the machine.
But Stark's Iron Man Armor had Artificial Intelligence assistance that was decades ahead of its time. The AI did most of the work, with his body merely assisting it.
That meant Stark had to pick the right commands amid the chaos of battle and then have the Iron Man Armor carry them out. It was an incredibly complex process.
Alvin got dizzy just looking at it. In his hands, Angel, an AI that was powerful enough to be legendary, had ended up as little more than a navigation system—and one he rarely used...
After nearly five hours of fighting, Stark also had to divide his attention to control the attack paths of two Flying Swords. He was already starting to buckle.
Ivan wasn't doing much better. The Russian was using far more stamina than Stark, and communicating with that red whip required intense concentration. If he hadn't been determined to stick it out against Stark, he would've collapsed by now...
Colonel Rhodes, the United States military's so-called "War Machine," circled above Stark and Ivan, raining down powerful bombs and bullets.
He'd already gone back to replenish his expensive ammunition for the sixth time.
Whether he wanted to prove himself or show Stark that he was still his friend, Colonel Rhodes was giving it everything he had