One of the best Zelda-esque games, free or otherwise, I've ever played.
That being said, some negative criticism - I met Sardol. He implied what I had already guessed. I beat the game, with blood on my hands and not. Either way, a rather plain ending for an otherwise marvelous game.
And finally, not criticism but perhaps lack of memorable experience - while most of the bosses required some level of wit, a couple were far too easy and hardly worse than regular enemies. Ex: Strategy wasn't required for some of the bosses as it was for most of the regular enemies who would ruin your day simply by running into them.