Mr.Mumbles: I enjoyed Shadowhand, even if the combat system could get in the way of fun at times. I hope it's better balanced in this one.
[disclaimer: based on playing ~3 hours, 29 hands, on Nightmare difficulty]
If you felt that Shadowhand's combat was not "well balanced", I think you may like this.
The biggest difference is that whereas combat in Shadowhand is more or less symmetrical, in Ancient Enemy it is not. In Shadowhand, both you and your enemy charge abilities/weapons by playing solitaire, aiming for long combos, and essentially fighting for the same resources. In Ancient Enemy, only you play solitaire, whereas your enemy's abilities are charged at a constant rate and its upcoming action is indicated beforehand so you can try to prepare for it and block it. Your enemy becomes a lot more predictable.
I can say that --- so far --- I greatly prefer Shadowhand's combat, but I suspect I am in a minority. Shadowhand felt like it was designed to be innovative and original; Ancient Enemy feels like it was designed by someone more experienced to be more conventional and for me less interesting. Still, I enjoy it, just less than Shadowhand.
I expect people who didn't like Shadowhand so much raised a cry about how the game was "too RNG" or "too frsutrating" or some such, whereas those who loved it, like me, just played the game to death and didn't cry as loud, so the developer attended to the nay criers more. To me it feels like they took a great game and made it into an OK "sequel".
Other aspects of the game, like graphics and story are sadly not at all on the same level. Ancient Enemy clearly pales there in comparison with Shadowhand.
Still, taking my disclaimer into account, I recommend the game.