Worth noting: I haven't
completely decided on who your ten highly placed enemies are, but right now "parts of the Royal Family, some of the leading army generals, a few archbishops, a couple of leading intellectuals, and merchant guildmasters" are
all likely targets, and worse, that many enemies with a
specific and long-standing grudge against you means that your reputation is going to be plummeting in their circles.
To add shit to the pile, you're going to have to aim for some position of "hero of the people", and then hope that things go
really shit for the people so that the peasantry turns hard against both the upper crust (not that hard in the cities)
and the Compact. You'll need to start setting things up so that the
entire franchise of nobility starts getting questioned by the country, and for that you'll need some sort of crisis to kick things off. After that, you'll need to hijack that gathering so that it basically gets taken over by the non-nobility and non-clergy.
Remember how I mentioned that those intellectuals probably also hate you? Well, now that you've managed to get out of having the Royal Family hating you, and probably some of your noble enemies to be depowered, you've probably pissed off some of the liberal nobles and you've definitely pissed off the intellectuals underpinning the franchise, so during the period of constitutional royalism and the abolishment of feudalism the ruling groups still hate you.
Because they now hate you, you now need to overthrow this new gathering and install a new government that partially answers to you in the process, and now you're probably safe.
You'll then want to secure some form of spiritual backing so that the countrysides don't explode into endless numbers of Royalist and Federalist armies trying to put down the godless heretics proclaiming "down with the Compact and down with the divinities". Admittedly, just being in heterodoxy if not outright heresy is still going to get a province or two to jump in open revolt, but it's not going to be "oh the entire rest of the country is forming an army to purge us".
Don't forget that your neighbors are there too, and they're not busy partitioning some other poor sod; they might be tempted, upon seeing your internal conflict, to jump in and partition the country in pieces themselves, after installing a friendly ruler to the crown. So in order to stave those guys off, you'll need to overhaul the entire army and implement a series of crash reforms and innovations and oh shit you've just called down a Crusade to put down the Compact-breakers.
Well, shit. If you're still aiming to win, now you have to go about establishing a revolutionary government, one that brooks no disagreement and tolerates no dissent. Terror will be the order of the day, at least until all the threats to the Revolution, internal and external are shut down, spiritual and material alike. You probably won't win, if only because unless you've been moving
really fast on the spiritual front the countrysides are erupting into the Armies of the Gathering to link up with the foreign armies parading through your land until the centers of these heresies are completely torn down and left as a reminder for "don't ever break the Compact"...but if you're fast and lucky and lucky time and again, you might actually...win.
Except, well, now that you've made Terror the order of the day you need to survive both the Terror from your more radical colleagues and the Reaction when you inevitably run out of steam, before eventually stabilizing and realizing shit, this system isn't stable either and you might as well get ahead of the game by couping it first.
You're basically going to have to initiate, and then survive the French Revolution while the leaders at every phase of the Revolution hates you for one reason or another. Alternatively, when things get too warm, it's probably a good idea to just...slip away where nobody pursues too hard.
Fortunately, there are some factors that makes this somewhat easier. Inflation is beginning to take off in the province with all the mints, which will inevitably propagate to all the other provinces of Oskaria - that's bound to piss the peasantry off. I hadn't expected the government at all levels to be so incompetent; in a real respect, anywhere where you aren't headed the government is busy rotting and collapsing, and that's not much of an exaggeration. Oskaria is also about to be emroiled in a Crusade with an undead lich baron trying to establish permanent rule; should that war go badly (and it can go Lich Dragon Empire badly), you'll have the justification to begin calling for total reforms, provided the right nobles are embarrassed or dead.
Just, uh, keep in the back of your mind that if you fail at any of these steps, you're liable to find yourself executed. Fortitude may not have been the right pick here.
This convulted series of events would be a lot easier to arrange if you picked Prudence as your Virtue, I'm just saying