I'll have to be totally honest here. I do find the gameplay solid. However I also find it rather predictable. Coming from someone with hundreds of hours in Slay the Spire, this game bears striking similarity with that game. This is not an accusation of anything however. Game can fall in the same genre as well as the same architype. What I would recommend is adding your own, unique elements to the "turn-based card-builder rogue-like" architype. Maybe you could add a weapon system, or a skill tree, or having other ways of interactions in combat other than using cards. Adding your own flavor is what usually help your game stand out from an existing genre.