Have you explored the oasis town in the desert and the Dragon's Den pyramid west of it?
Update,i finished the game but i don't know what's the use of flute and the tower with music symbol on it. Is there anyway to get songs and to go to that building song? Wait, does this have 2 endings? I watched the gameplay and I saw same endings but not the other one. Is there anyway to get the second ending?
But although it was very fun and a little frustration at the same time.
Other than that, good job!