Type these at the main menu:

WOOWOO - Havoc Sirens
SUPACAM - Enemy FallCam
BENIHILL - Benny Hill cars
PANTALON - All Secret missions (in Training menu)
DOOBIES - Infinite Shields *
MRTICKY - Infinite Weapons *
STATTOE - In-game info

* You can't progress past the current mission when this code is enabled.

Level codes:
(These codes only allow you to play the selected mission no matter if you
succeded or not, the game will end after this mission)

1 MADGAV - 11 ANDOOOO - 21 IAINTHOD - 31 PUGGER
2 DOLMAN - 12 KIMBCHS - 22 JONRITZ - 32 ROSSCO
3 SONAGAV - 13 ANDYMAC - 23 CLAIREC - 33 CAKEBOY
4 ACEDUF - 14 YERMAN - 24 STEVEBOT - 34 NIKNAK
5 JOJOGUN - 15 OLLIEB - 25 ANGUSF - 35 SAGLORD
6 WENSKI - 16 THEYOLK - 26 EUANLEC
7 SAEGGY - 17 TONYMASH - 27 EDFIRE
8 MAZMAN - 18 ANDYCROW - 28 STUBOMB
9 DAZMAN - 19 BIONIC - 29 THONBOY
10 DELUCS - 20 TSLATER - 30 JIMMAC

And here are the codes that lets you play on after the mission:


  1 - SXYLAAAA
  2 - KJOXAAAA
  3 - UIXZAAAA
  4 - MKFHRFAA
  5 - WHLTMIAA
  6 - YITSRFAA
  7 - UWCQAAAA
  8 - MYKXQFAA
  9 - YIOQMIAA
 10 - CJWGRFAA
 11 - IKFNIVDA
 12 - GVFSAAAA
 13 - MGIZAAAA
 14 - EIQGRFAA
 15 - QSTZMIAA
 16 - EEIQRFAA
 17 - CHYRAAAA
 18 - UGZKAAAA
 19 - KFPGRFAA
 20 - YCQGNIAA
 21 - ICZINIAA
 22 - WHCIAAAA
 23 - KTUWQFAA
 24 - YQVWMIAA
 25 - IQEZMIAA
 26 - EGXTVCAA
 27 - SRPIMIAA
 28 - CRAUVCAA
 29 - ODHDWCAA
 30 - CPZRMIAA
 31 - YOVYMIAA
 32 - YAXTRFAA
 33 - CRZOVCAA
 34 - QOAPRFAA
 35 - OPLRMIAA