I actually 100%ed it without a walkthru, although one puzzle (the one about uncorking the well) I actually solved almost by accident.... I got what the idea was but I don't think I was doing the exact method, but I kept trying and when I didn't even think I was done, suddenly the cork comes out.
The only other thing I didn't like was it doing the thing where you have to go over old ground to find artifacts. Admittedly two of them were in places I wanted to explore anyway, but then one was kinda BS.
I'm now actually almost done with Wonder Boy in Monster World on the Sega Genesis... I'm kinda shocked with how short the game was. Like "I'm at the end already? Seriously?"