I'm at the moment progressing through Act 3, and I can say this game is pretty rough around the edges, though there's fun to be had. It reminds me a lot of Solasta, minus the DnD/fantasy setting in favor of a more historic one, which to some will be a minus, and to others a plus.
Generally, combat works and it's challenging. It's not overwhelming or unfair as some critic review that was posted in these boards. At the highest difficulty, it's just right. You have to play tactically and clever, mistakes are punished, I like that.
But like Solasta, it fails in its flatness. Uninteresting standard actions end up boring the hell out of you as every battle feels like deja vu. You move up to an enemy, you attack. If you're an archer, you move up to some cover, and attack. This is where great games like BG3 manage to keep things interesting, and Crown Wars: Black Prince falls short.
The story is presented almost nonchalantly, as background chatter, with no build up or magnificent appeal. You go from one battle to the next with no interaction or regard. At chapter ends, you get a static "cinematic" that tells you what's going on. You make no choices, or take no paths, it simply plays out as scripted. Endless random filler battles pop up left and right to provide resources so that you can be strong enough to the next story mission, which is not that much more elaborate than the filler mission you just did.
A little bit of an annoying thing, this game is crashing me to desktop every third mission or so. Luckily, it seems to happen only when the mission begins, right after the autosave, so it's a minor inconvenience, but still not something I've experienced with way more demanding games for months, if not years, in my current rig.
All in all, I'd give it a 6/10, maybe push to 7/10 if you like the theme and/or challenging TB battles, but as mentioned above, I get the exact same vibes as I did when playing Solasta - close to being a great game, but falling just short in every metric.