The difficulty is... whatever you want it to be, actually. Not only can you adjust your level (ie, if you want it to be harder you can play through at level 5 instead of your actual level) and the difficulty, but if you find it too hard to control both the top and the bottom screen, you can set it so that the top screen takes over for you so you can concentrate on the bottom. :D It sounds really confusing but once you get used to it it's a ton of fun.