The shadows didn't form anything physically beneath him to make him go faster, but he was outpacing his own best time when he was normal. Even with corruption, the Nox had kept his body more alive and functioning than he had alone. The boxes tripped him up, at least.

Riddler heard...some. Enough to get the gist of it.

"It's too late!" he snarled. The rage was burning his stomach, caving in his chest on the inside. Too late for Aaron to figure it out, too late for himself to finally make that choice--

He arced his arm, a serpentine ribbon with lethal edges shooting out at Aaron's retreating back.