The only option that wouldn't have landed me in jail was to lay back and take it while following due process.
Dude was clearly a professional rental scammer who did this on the regular. He took the time to befriend me first, I went to his "current" property numerous times before he moved into mine and nothing was amiss. We ate Thanksgiving dinner together once. The house was clean and well cared for. I later found out it was an air bnb he rented to fool me with. He had trashed the place he was squatting in and the eviction process was nearing the end there.
He moved in after paying 1st month's rent and damage deposit. Never paid another dime. Changed my locks the first day. Moved in his 7 kids with 5 different women and an equal number of dogs. The kids and dogs destroyed absolutely everything 4' and under in the property inside and out. All the walls, cabinets, floors, doors and casings, windows even toilets and bath tubs had to be replaced. The dogs were kept indoors all day so they just pissed on everything inside and chewed on whatever they could reach. He left an obvious leak from a shower handle and toilet go the whole time which completely rotted the subfloor in the bathroom and saturated the belly insulation (modular) to the point that it was laying on the ground with thousands of gallons of water in it. He never cut the lawn once and never picked up the dog shit once. I literally filled 4 garbage cans full when I finally got him out. The property was in an HOA and he racked up thousands of dollars in fines, even after I explained the situation to the enforcement assholes who were thrilled to step up their ticket issuing.
When I finally got to the point where the bailiff and the cops showed up to remove them physically, all the dogs and kids and girlfriends were gone and he had found a wheelchair bound and severely handicapped kid to plant in the house (which was definitely not his) that they found, so they let him stay for another 3 months so he could find alternate arrangements. He knew what he was doing.
We are specifically not allowed to do things like turn off utilities or remove doors / windows to remove them and I knew full well he woudn't hesitate to put me in jail so he could stay longer and that he knew the rules inside and out so he could abuse them, but damn, I felt like burning that place down with all of them in there in the middle of the night on more than one occasion.
It was an awful experience. After I rebuilt the place I sold it and never did rentals again.