How is it hard? I cleared the career's boss after a while by using secret names and the equipment stealing. Spartacus' War is pretty simple but does sometimes take a bit of practice in knowing which units are the ones that are harder to defeat and stuff. Arcade is literally just endless. The game isn't that hard.
Fr bro the game isn't even hard I beat career mode in like a couple hours lol(yes the FULL career mode,including the boss,not just the farm ending,altho I like that ending more tbh;) ).
Also Spartacus's War is PATHETICALLY easy no matter what faction u're playing if u only use spearmen and the best generals u have lol;)