1. Level codes:

     Here  are  the  codes  for the Wild Wicked and Havoc levels - the
Crazy level is just too easy:

Wild:
1  BAIQUMOJCO           2  IIPWMICKCD           3  MPUEMCCLCM
4  PUDMCKLMCD           5  VEMCCHWNCQ           6  LICOITWOCQ
7  OCCLVUEPCH           8  CKLWUEOQCR           9  CAHRTCMBDE
10 IHSTFMCCDI           11 STGOCILEDR           12 VOKCCHVFDR
13 NKCOHWVFDR           14 ICCLVVOHDF           15 CKMTTOIRDL
16 CCHSUGOJDN           17 IHRUFOCKDS           18 LQUNICALDQ
19 QUGMCIMMDH           20 CIMTVLIICH

Wicked:
1  UFKBAHTNDK           2  FKBIHTUODD           3  KBALTUFPDQ
4  BILTUFKQDJ           5  FAHPTDJBEL           6  IHPTDJFCEE
7  LPTDJFADER           8  PTDJFILEEK           9  TDJFAHTFED
10 DJFIHTTGEM           11 JFALTTDHEJ           12 FILTTDJIES
13 FAHPUDJJEE           14 IHPUDJFKEN           15 LPUDJFALEK
16 PUDJFILMED           17 UDJFAHTNEM           18 DJFIHTUOEF
19 JFALTUDPES           20 FILTUDJQEL

Havoc:
1  GAHRVFLBFF           2  IIRVNLFCFG           3  MPTNHGADFM
4  RVNLGIMEFN           5  TFLGAHVFFL           6  NLGMITVGFR
7  LGAMVVNHFM           8  GMMTVNLIFH           9  GAIRWNLJFH
10 KIRWNLGKFS           11 MRWNLFALFM           12 RWNLFIMMFF
13 WNLFCIVNFQ           14 NLFIIVWOFH           15 LGALVUFPFK
16 GIMVUNLQFM           17 GAIRVLMBGO           18 IIRVLMFCGG
19 LRVDMGADGL           20 RVLMFIMEGM

Cheat:
     To  complete  each level with 100% of your lemmings left for zero
amount of effort type in SLAMRACING instead of a password. Then should
you  get  fed  up  trying  to complete the level simply hit [5] on the
keypad to skip to the next.