Application already created need errors corrected and home screen added.

I have an application which has already been created. There are some issues I will state below that need corrected using xcode. I also need a home screen added with music and the ability to click the start button to start the game. I have the home screen already designed and the music can be the same music that is already in game. I will not pay outside of freelancer nor will I pay before completion. Errors I have seen with application during debugging. enemy's don't die after being hit level ends before all enemy's are hit. app crashes there is no way of starting a level after restarting. no save feature The app doesn't show app icon on iphone / ipad