What I learned is that if you really have to use the wing and you happen to be at the store location, rather than spending money on potions to heal yourself, just sell all your items (except for the artificial ones - if you don't need them, don't sell them just yet). Use the wings on yourself after you sold the items and start the quest again. You have all the money you just earned from selling the items, and then from there, you can buy more items and potions. Not to mention, sell the artificial items you don't need then because your process has already been saved ^^
Level 14 was by far the hardest! Finally defeated it after leveling up to level 38 ~ The catapults sure did their job, as well as five meteors. It took me five different strategies to finally defeat the level in order to get the hard badge! ^^;
It is an annoying glitch when you finally pass a level you have been struggling on, only for the "attack" button to not work. What happens? You do not pass the level after you finish off the boss and have won T_T
It would have been much better if you got to control him. I don't remember playing Prince of Persia when I was a kid where the prince kept on running and the only way to stop him is to run into a wall!