I suggest going into the WP7 leaderboard and watching the replay for the #2 highest score in the world to see how it's done. The #1 score is glitched (might not be their fault), as their score is almost twice the "perfect run" and watching their replay they only get 1,825. So, the #2 score is actually the highest.
Plus, the person at #2 is super-cool and super-talented.
Achievement Guides by litepink™
Angry Birds WP7 | Arkanoid Live! | Asteroids Deluxe WP7 | Darwinia+ | Doodle Jump | Guitar Hero 5 | Kinect Adventures | Kinect Sports: Season Two | Lego Harry Potter | Lunar Lander WP7 | MLB 2K10 | Otomedius G | Pac-Man CE DX WP7 | Rainbow Islands | Rock Band Metal Track Pack | Scott Pilgrim | Tecmo Bowl | Tiger ‘10 | Tiger ‘11