What first appears to be a zeldalike or soulslike, turns into something completely unique that you have never played before; because there simply isn't any other game like Tunic. The selling point of the game isn't the difficulty or the puzzles, its the way you traverse them. In any other game you might get stuck in some part and so you would get a better item that would make it easier to complete, but in tunic that item is knowledge. Have you had known that knowledge from the beginning of the game, everything would have been a breeze. Say you restart the game from the start after completing it. You still have that item because that item is something Tunic cannot take away from you, which is knowledge. And when I say knowledge it isn't just some "most optimal path", it is a literal tool. And thats what makes Tunic different from any other game.