Gave it a quick try; didn't manage to beat any bosses, but I tried some of the dungeons.
My thoughts:
Very cute menu.
Bit too many prompts all at once to start with the nine tarot cards, especially since you don't start with a weapon or any items
Maybe save most of it for the tutorial, or when you actually get weapons and items?
I also didn't see any way to review it once the game proper got started
Bit distracting that Mundo changes direction when you use the arrow keys in the menu
Owl tutorial is nice and thorough, but the dialogue is a little slow
No sound when picking up hearts?
Nice touch having different sprites for left and right; but you're not getting a lot of use out of it, are you?
Waterfall secret's a little TOO obvious. Cave could use a little secret of its own.
You can't just steal the green witch's broom when she gets stuck?
Got real tired in my finger when spamming the attack button during magic carpet boss
(nice boss other than that and the lack of sounds btw)
Dragon boss seemed pretty cool, but the controls were sluggish on the broom.
It was a bit easy once I figured out where to hit it.
The "oktorok"s a lot more anatomically correct than I'd expect from the game's style.
The skeletons in the island dungeon seem super hard! I think I had some spawn directly on top of when when I walked in the room.
You should probably remove the player's keys when they die, it's much easier to just run past enemies and hope you can reach your
goal than it is to actually fight them.
Could really use some sound when you pick up healing
Come think of it, most of the time I took damage there was no sound at all.
All the dialogue feels a little wonky to read.
That and the lack of any music was probably the most major issues with the game.
All in all, looks promising.