The lightening did help in giving his suit more juice, but the circuitry must have been affected with one of the hits because it wasn't powering up as much as it should have. Nonetheless, the firepower that Thor had just provided was still sufficient for him to concentrate the energy into one shot from the chest piece, and at Thor's command Tony fired in the beast's direction.
It wasn't working in the way that Tony had originally wanted it to, however, and the damn thing barely seemed to sway.
With a growl of frustration of his own, Tony shot off the ground as soon as the ray finished and flew in the direction of the enormous zombie. He should have known it wasn't going to work - hell, Thor was a GOD and he had been swatted down himself - but in his mind he just had to give it a shot. Maybe the blast had been enough to at least slow it down, and maybe knock it down? The overconfident move was probably foolish and reckless, but well Tony Stark wasn't known for being cautious. Not when it came to the safety of others, and right now the prison and the general population of survivors was above everything; including the safety of his suit, and his own.
In what he had hoped would be an easy hit to send it to the ground after seeing the monster sway, Tony came to realize that the energy was probably what had caused it to only be pushed back. It wasn't that it had been hurt or even that it had caused damage - they had essentially just slowed it down for a brief moment, because the suit hadn't managed to hit in the way it should have.
Before he could hit, or even fly away, the creature grabbed onto him as if he was just another tree to toss, and Tony felt the way that its grasp was crushing the suit. Deploying the flares on his shoulders to blind it, or at least make it loosen its hold on him, Tony tried to wriggle away but he couldn't. It was barely a moment, but the strength of the damn thing was enough to make it feel like hours; especially in the way that the suit was crumbling under its grasp.
Before it could crush him to death, though, someone must have hit the monster and pissed it off again to make it toss him like if he was just another piece of debris. Tony would have to thank either Cap or Thor, probably both, for that save, but as he plummeted through some trees and onto the ground, he could barely think straight as the suit went offline completely.
"'m fine," he barely mumbled as he removed the faceplate, but he wasn't sure who had really heard him. The majority of the abdomen and chest part of his suit showed the damage of where the monster had crushed it, as well as his left arm as it had been caught as well, but he could still breathe. That was a good sign, he supposed.