330 points (Hard Mode with 110 coins at the end) The Kingdom will dance butt ass naked and vibing with their Crow King
Fighting Experience: Light Spearman and Archers. Those are INCREDIBLY GOOD, especially when they are veteran. You can use only that to outlast the game. Any other units more than that is to combat the problem of your spearmen get slaughter, need replacement for 6c and you would have sobed thinking you would have rather hire the catapaults to do the heavy lifting to save the men from death. Always positioned your troops as close as possible to energy coins(or whatever you called that). Structural defeciencies can be covered through the use of Move order to retreat and form back the battle line. Consider if it's worth it to save the peasents for often time, saving them is at the detriment of your front got incredibly exposed/kill out instantly, and the back with ranged units got absoulutely flanked and raped by the enemy. Towards the two end battle, especially at Hard Mode, rescuing the peasents is just enough to break even with the lost of Light Spearmen or the recuitment of another melee units. So yeah, consider (I don't care an f about the peasants and nigh never save them, dead man don't talk)
Economic Experience: Upgrade all stats related skills in the skill tree. 3 Battles leading to the final one, researching only the thing that help you gain coins. At the final battle, sell everything you got, excluding ranged units and Light Spearmen (They are OP) The Demon King is actually not that scary, heck I would even said the Dragons are more fearsome cus they caused chain damages. One Dragon Breath, 3 volleys of arrows, an Armour Up to tense the front and a Break Out order is enough to lop the King head
You may also need to Try and Error, for often times in a Hard Mode battle, bring in the catapults prove overkil, while not bringing it CAN be cheaper, but require more neurons exercise and precise timing of delivering orders (which I guess ya not really gud at)
Score freakingly high is very possible, but requires some neurons excercise, positional imagining and some dumb luck (you deliver the order right before your units get slaughter for instance)
For me, can smb make the best wargame, one that is as tactical as this one, as economically and logistically related like Call of War, as strategical like some firm or business super-hardcore you-are-newbie-in-the-field-and-the-global-comeglorate-is-commin-to-get-ya game. Heck, even if it has a learning curve of one year and 99 bucks? Shut up and take my money!