After finishing the Demo I do have to say that (bugs and visual quality aside) I found myself pleasantly surprised by the dedication to keeping to the original games controls and gameplay. I personally feel like to some degree this is a bit of a drawback (for example the tightness of sonics movement feels somewhat wonky in both the original game and this remake, and the swordplay is undercooked. A button for horizontal strikes and another for vertical strikes would go a long way I think- even if it would be a step away from the original game), but it did invoke the same feelings within me as the original game (for better or worse).
Moving on from that however, I think that the new fight with Galahad is actually exactly what this remake could benefit from more of. While the fight was not perfect (I see you've already received comments about the responsiveness/timing of the fight), to me it felt like it had leagues more character than the mindless thrashing of the controller in the duels with Lancelot, Gawain, and Percival. I would be interested in seeing these knights get their own reworked fights and a more interesting chance to shine. My only real gripes with the fight were the usage of "dreams of an absolution" and silvers voice lines- which to me dont even feel like proper complaints to even be making since this is an alpha build, and I'm sure the quality will improve as time goes on.
As for bugs, this build is most certainly riddled with them. Multiple times my character fell through the floor, or the camera kept pannign away from where sonic was during misty lakes to focus on a couple of pots, or sonic would keep grinding on normal terrain even after getting off of the rails segments. I think my biggest complaint however is how loose yet somehow tight the inputs are for the controller (if you choose to play with one, which I do). I'm not sure what it was, but I was unable to complete the king arthur boss fight with controller and had to switch to mouse and keyboard. The inputs just were not working.
I'm looking forward to seeing more of this and the plans for the project in the future!