Mine would be to simply watch females fight each other to the death with bladed weapons. Guns are too quick and easy, Fists and limbs just leave bruises and fractures, and blunt weapons like bats and hammers are brutal, but they are pretty much the same as fists but harder.
Bladed weapons cut, slice and open people up. They can easily remove parts too, leave scars and spill blood. Plus, someone pulling a knife out on you I think would be far more intimidating than any other weapon.

Im a simple person to be honest. I just want to watch two hot females engage a knife/sword fight of some sorts. Sure this has been done before in films and media, but it usually just ends with one stab or slash after a few minutes of dodges and weaves, which is boring as fuckkkk, and annoyingly the most brutal, drawn out and bloddy bladed fights I have seen (The Raid 2 and The Hunted) have featured men.

Give the females some reason for wanting to kill the other to make it more meaningful and have greater impact, and put them somewhere with little room so they can't avoid each other. BAM, you just got some serious attention of mine.

However if I could LITERALLY create an ideal scenario, they would both be rival assassins or soldiers, highly trained and buffed up or enhanced somehow (Captain America super solider serum style maybe?) so they can take a lot more punishment before succumbing to their wounds or death.
Seriously. I want the two of them to GO HARD, and the victor isn't walking away from this without at least losing some smaller body parts, serious damage to the tits and getting her belly sliced open and fighting with her guts slowly spilling. Then having to journey on with her mission, or return back to base all fucked up.

Or just observing a massive battle with two tribes of sexy amazonian women. That would be a bloodbath and no doubt would have a lot of content.