for daft lorna race try INVERT. Fastest way to have your speed up. You can easiliy arrive to 11 but IF you lose your boost bonus restart because you will have no time to rebuild the speed from 0
For insane the easiest way is to use the shield. While using it you are simply invulnerable (last boss done without taking any dmg) +1 so everybody can read
Thanks for the comment. And i will try and fix the game as soon as possible.