(Mild spoilers follow for Daredevil season three, episode four)
To take the stakes even higher, season three gives us a 10-minute sequence involving several hallways, a few rooms, dozens of stunt people and extras, pyrotechnics and practical (ie not computer-generated) smoke effects.
And it does it all in one single take — no edits, no cheating — in an episode directed by Alex Garcia Lopez with Gary Stearns as the stunt co-ordinator.
"It was incredibly ambitious, I didn't know if we could do it," Cox tells news.com.au. "I was a little bit sceptical, I was thinking maybe it was too much for us.
"We took an entire day off from filming, which is obviously a huge risk and at great expense, just to rehearse it.
"Then we spent a whole day filming it, over and over again, trying to get it right. It remains one of the greatest days of filming I've ever done. It was such an exciting day, it was nerve-racking."
Even more impressive is that instead of being hidden by a costume and a mask, as the character was in the two previous one-take fight sequences, allowing a stunt double to do the heavy lifting, it's Cox you see on screen most of the time.
Cox says he felt more confident doing the sequence now the show is in its third year.
"We did a one-take scene in season one that I was not able to do much of because I didn't have the training or the experience. So to be able to do as much of the one in season three as I did was very rewarding."
But if you look very closely, you can occasionally discern Chris Brewster, Cox's stunt double, being subbed in.
There's a bit when Matt falls out of the frame for a split second, which allows Brewster to come in, and then Cox is switched back in 45 seconds later when the character is thrown behind an obstacle.
Those 45 seconds, around the 23.33 mark, contain the most complex stunts of the whole 10 minutes and you only see Matt's back or face in shadow.
Without spoiling too much in terms of story, Matt Murdock goes to visit someone in prison when he becomes the target of an attack, which turns into a full-blown riot.
He's in his civilian clothes — suit and tie — and has to fend off dozens of inmates, crooked officers and talk a group of heavies into supporting his cause.
Cox says he's lucky he's able to pick up choreography quite quickly, putting it down to a lifetime love of sports.
"As a schoolboy, I was obsessed with sports," he says. "I played everything under the sun. That's been the great love of my life — sport. Maybe that has helped me.
"We have an amazing stunt team and they're great at teaching me.
"When we got that final take, the one they use in the show, the celebrations went well into the night. It was a real testament to the whole crew and I was so proud to be part of it. I'm really excited for fans to see that one."
