Invincibility
Enter DEATHWISH as a password.

Infinite Ammunition
Enter BIGPOCKET as a password.

All Weapons
Enter TOOLEDUP as a password.

One shot Kills
Enter OOHSTOPIT as a password.

Rapid Fire for Shotgun
Enter MYBIGUN as a password.

Extra Explosion Damage
Enter ACMEBANGS as a password.

Enemies Do Not Move
Enter COLDFEET as a password.

Invisible Mode
Enter DOYOUCME as a password.

Alternate Sounds When Hit or Killed
Enter HORNBLOW as a password.

Passwords

Level       Ecks            Sever 
2           SMOKEY          RAVEN  
3           BUTTERFLY       FIREFLY 
4           COVEY           BULLDOG 
5           TIGER           DRAGON 
6           HORNET          LOUDMOUTH 
7           LITTERBUG       STINGER 
8           MUSTANG         NAIL  
9           SPECTRE         ZORRO  
10          NIMROD          XRAY  
End         SPOOKY          REDDOG