The idea is really cool in concept, but i don't feel like it's taken advantage of enough, the cards are always the same from my experience, so you can just pick the four easiest cards and play a normal platformer, in my opinion, the game would have benefited from cards that change the gameplay way more broadly, which is easy to say and i know it would have been hard to program.
For the platforming gameplay, i encountered what felt like a bug but might be the result of the drunkard card, i was permanently stuck in the spin attack animation in the air, and when i landed i was still spinning and i couldn't jump until i initiated a spin attack, then i was grounded until i jumped again, like i said this might be intentional from the drunkard card but it surely didn't feel like it. There were also some typical unity 2D platformer bugs, such as getting stuck on corners, fixing those doesn't take a lot of time and would have added a lot since they are pretty easy to encounter.
While the gameplay might not be the best executed, the vibe is really well done, creepy music, creepy character, creepy enviorment. A lot of points from visuals and audio. To be more specific, the game is missing some polish in this department too, some hit indicators would be nice to know you're dealing damage to the enemies, and while the music is really good, some more sfx would be great and maybe you could skip on the waterfall audio, which in my opinion doesn't sound too good and the loop is very noticeable.
As some others have said, the theme and seriousness are a bit lacking too, you don't spin to win, you spin because you are forced to. In the platformer this is better as the spin attack is actually really useful and helps you "win".