Don't know what you mean by anyhting there, except the arrow key movment for the camera. The easiest way would be to
if(FlxG.keys.UP)Or you could have a FlxSprite in the middle of the screen, make it's alpha 0, and controll ots velocity woth arrow keys. Then use FlxG.camera.follow(nameOfSprite);
FlxG.camera.scroll.y -= 5;
//And also for every other direction
Hope that helps, even if it isn't what you meant.