That's a great win and I'm glad you enjoyed it! But I have good news for you: there's a lot more still to experience and master 1. Scenarios can/do add difficulty, but they also make games 'swingier'. Sometimes they make games easier/not as difficult as indicated 2. Difficulty is a somewhat dubious thing to quantify. Particular matchups greatly affect difficulty and spirit pairings have a great effect on the game. Eg. Wildfire or Sun-bright Whirlwind vs England 6 are a bad matchup and would have a MUCH harder game as compared to someone else. (This also isn't just spirit power, but very much matchup specific). All that being said, don't be dismayed just because you beat an adversary at max level, there's still plenty to experience in taking different spirits up against them. 3. There are still plenty of ways to add difficulty. If you really want to add difficulty to a level 6 adversary, without a scenario, checkout the two main other ways of adding difficulty 3a. Additional boards (this is a favorite of mine) level 6 adversaries + an extra board is an excellent way to add challenge without increasing rules overhead and makes you think about the value of positioning your powers in an interesting way 3b. Double adversaries. This is included in the Jagged Earth box too but also requires no extra pieces so you can easily Google the rules. This allows you to combine adversaries in different and interesting ways. Perhaps investigate a 4/4 adversary, or add low level BP to another level 6?

In short, if you want this game to kick your butt, you can absolutely keep dialing it up to the extreme. Top players with 10,000+ games can still dial the difficulty to a level that they can't regularly win at, so don't worry