Type in these codes as names:

 6661970 - Infinite lives
 tourettes - Inf. lives and hit [*] key for all weapons
 ohmatron - Inf. lives and hit [*] key for all weapons
 pieandmash - Inf. lives and hit [*] key for all weapons
 asawindow - Inf. lives and hit [*] key for all weapons
 notourettes - Inf. lives and hit [*] key for all weapons
 flashmotor - all levels
 super well - all levels
 travelcard - all levels and inf. lives
 iamfilth - inf. lives
 tithead - inf. lives
 deathtoall - Inf. lives and hit [*] key for all weapons
 iamgod - 10x Multiplayer Inf. lives press [*] for weapons
 averyrichman - 999999999 points
 uaintnuffin - 999999999 pnts all weapons if you press [*] and all items
 psychadelic - 999999999 pnts all weapons if you press [*] and all items
 silence - 999999999 pnts all weapons if you press [*] and all items
 driveby - 999999999 pnts all weapons if you press [*] and all items
 herc - 999999999 pnts all weapons if you press [*] and all items