if you can beat easy difficulty with zero errors you have probably started typing class if you can beat medium difficulty with zero errors then typing is probably something you do a lot if you can beat hard difficulty you probably have exceptional skills in typing, and it's unlikely you make an error pressing the wrong button. if you can beat advanced difficulty you probably have a job that requires insane and accurate type skills, with no mistakes if you can beat expert difficulty you probably are going for world records cant imagine anyone beating past this, but if you do, you play this too much.
decided to make the hardest game. Be happy I didn't make it harder, by using mouse, numbers, making it go different places on the screen, and making shift levels (a goes to b, b goes to c, ect)