The demo was quite nice. I really like how fast you have progress.
I liked the Chiming Swamp and the area with the Time Temple music from TP best.
But in many areas the world felt too empty. You'd have to add more interactions with the environment (e.g. cuttable bushes) and more decorations (see attachment 1).
One thing which is really unbalanced is the rider, because you can't get hurt while you're on it. So can just roll over the monsters, which die without even having the chance to hurt you. So this makes many fights practically unloseable.
Another a bit bugged problem is the pushback of the monsters when hit. Sometimes they get pushed back in directions which are different from what you expect.
This is probably because the pushback direction is determined by the coordinates of the weapon in relation to the coordinates of the monster (I'm only guessing here). This is fine for ranged weapons, but for the sword I would replace the coordinates of the sword with the coordinates of Link for the calculation.
Oh, another thing: There is one room transition near the Lost Woods (?) which allows you to appear on top of some trees (without collision). This leads to some fun screenshots (see attachments
).