A friend at work broke a million today. And he played the expert level! I've only played the easy level.
I think the challenge is surviving and then seeing how fast you can type. The game gets MUCH harder as new creatures and different color sharks are introduced.
I'm on the X-treme level. The !@#$%^&*() are the ones they're getting me on. Also my hands are tired because I've been typing all day and my joints are acting up. I need to try this when I'm fresh sometime.