New antagonist. Ninja-type fellow, symbol looks like a DD but it's... katagana? The other thing? Name is Ikari. Basically, has Daredevil's exact powers, training, etc, and is brought in by Bullseye to fuck Daredevil up.
And he's doing so, with aplomb, has DD on the run. Sprinklers are triggered and DD realizes this is his one chance to get the upper hand- radar sense is almost useless in these conditions, so he can prepare an attack Ikari won't be ready for. They're in a sporting goods store or some such. Matt reaches for an improvised weapon...
...and it turns out that Ikari can see fine, which means he's just been watching DD struggle and hide, biding his time to fuck with him.