If you're not strapping on an Oculus Rift headset and using both a virtual reality treadmill and a special assault rifle controller when you play a first-person shooter, well, I just don't know if you're getting the most intense experience possible.
The treadmill being used here is the Virtuix Omni, and though we've seen it in action before, here we see how a player fares against other actual people in an online match. Spoilers: you can actually be a formidable foe while using all this gear. Heck, it actually looks like you'd be able to be rather accurate -- the main issue might be stamina:
It's still an elaborate set-up that not everyone might be into, but hey, you can't say it's not novel.