Best Team for Web Slinger Challenge is...
My team was literally Iceman and Hyperion + Mutant synergy to increase crit and attack
Hyperion's power gain stops Spidey Stark Enhanced in his tracks, mainly because you hit him ONCE and it turns off the Stark AI. Then just look out for the AI to refresh and hit him again right after it, kinda like Bane in Act 5.2. Spidey SE's dash attack has a long forward momentum, kinda like Venom's, so it's easy for Hyperion to land that first hit. Once you corner SE, he starts using his S1 quite often. Spam Hyperion's specials on him to keep him in the corner. Your power gain will make sure you always have an S1 or S2 to hit him.
Iceman stops everyone else. I'm serious. Spam S1 to keep Coldsnap active and say bye bye to their Evades. Don't get hit to keep ice armor active. Eat up that S3 from the opponent, and that S3 will likely fill your own bar to an S3. Do Iceman's S3 to get the ice armor AND the coldsnap back. Rinse and repeat. And the regeneration node just makes Iceman's life cycle in each Round so much longer.
That's literally it.
Feel free to replace that mutant synergy with anyone else you find fitting, but this specific team arrangement worked like a charm for me.