I found out about this game pretty recently, and overall I'd say I'm pretty impressed. I like the art style and the combat is pretty engaging. I also enjoy some of the little darksouls-esque flourishes. That being said, I do have some critiques from what I played.
Essentially it boils down to combat and defeats. First, about combat. The way I saw it, it looks like it's implemented in a way that's designed for the long haul and currently there essentially is no long haul. The main issue I ran into was that it was quite difficult to actually get high-level corruption actions/attacks to happen before you simply lose due to losing all willpower. And that's with me making a concerted effort to prolong fights as long as possible on purpose.So that being said, this could work itself out if the game went on longer, but as it is, a little iffy.
Secondly, I have a bit of a different concern with the defeat scenes. Essentially, you measure corruption increases with thresholds of overall value and by # of a specific attack being suffered. The defeat scenes don't use any of the combat attacks that are tracked, so those won't go up. And, after the first 1 or 2 thresholds have been hit, the defeat scenes won't raise an areas corruption high enough. Mostly because all the areas get raised up randomly and none of them can really build up. That being said, defeats ended up just not doing anything in the end.
Sorry it was so long, but hopefully that's helpful.