Enter ENCHILADA as your name to unlock absolutely everything.

This is more of a glitch really but its still a little hint.



On the Volcano Level, try to either get blown or drive into perposely, into that big wall of lava near the black asfault.



Once you do you just might get lucky and fall through it and into pitch darkness...sort of like a glitch city.....



WARNING: This may be very difficult because it only happened to me twice so be on guard.....but its still really cool