This ‘stan borders Kazakhstan, Uzbekistan, Afghanistan, and Iran, and is one of the lesser known Central Asian countries for a reason; the only way you’ll get in is with a letter of invitation (LOI), and by signing up/paying for a guide (who's with you 24/7) in advance. If you get accepted for a visa, you'll need to decide what sites you want to see in advance, as your route will be mostly set in stone before you arrive. That said, don't hold your breath -- it's common to get rejected and deemed "an undesirable."
There is one loophole if you do get the kibosh: a three-day transit visa, but only if you can prove that you’re driving or biking across the country, have a predetermined route, and pinky promise to stick to it. Give yourself around four weeks to navigate the bureaucracy to try to get one of these temporary visas.