I'm in the middle of a big brawl right now where the main char is fighting a big group of people, and so far i'm just doing my best to write what happens. But it's hard to write with much style when you're describing each move. So it's like 80% a breakdown of the fight with about 20% storytelling and voice.
Whose point of view is it ?
In main character POV, if the main character's good enough not to need to think about what they're actually doing in detail, stick with what they're thinking, and the results of the fight, with the description of what happens when background and only the bits that don't work, or work suprisingly well, really catching their attention.
[ If they're not that good, against a bunch of people, it's either going to be a short fight, or they need some trick advantage which you can foreground in their thoughts instead. Like Indiana Jones shooting the showy swordsman in
Raiders. ]
If it's somebody else's POV, you have a pile of options, "Wow, look at that !", or "oh dear, it's going to be me next unless I'm careful", or "how did I get into this mess ?", or "Yeah, right, another boring Protagonist fighting insuperable odds, get it over with already, do I want pizza or Thai for dinner tonight... " would all fit plausible other character reactions there at least as well as a technical breakdown of your main character's style.
What's the point of the fight ? What consequences has it for people you want the reader to care about, and for the plot ? Communicate those, and the rest is secondary.