Nightmare Creatures 2 cheats and cheat codes for Playstation

Walk through walls
Hold L1 + R2 + Circle + Square and press Select at the main menu. 
A message will confirm the correct code entry.

Select any level
Highlight the "New Game" selection at the main menu. Hold L1 + R2 +
Circle + Square and push Select. Highlight the "New Game" selection 
again and press Right to select a level, then push X to start to play.

One-hit kills
Push L1 + R2 + Circle + Square and push Select, while the game is paused. 
Choose the "Cheats" option, then push L1 + L2 + R1 + Square + Select at 
the cheats menu.

Unlimited continues
Push L1 + R2 + Circle + Square and push Select, while the game is paused. 
Choose the "Cheats" option, then push L1 + R1 + R2 + Select at the cheats 
menu. 

Unlimited lives
Push L1 + R2 + Circle + Square and push Select, while the game is paused. 
Choose the "Cheats" option to access an option for Unlimited lives.

Super power-ups
Push L1 + R2 + Circle + Square and push Select, while the game is paused. 
Choose the "Cheats" option, then push L1 + R1 + Select at the cheats menu. 
Pivk up any power-up to increase the your attributes to 100%. 

Show remaining enemy life
Push L1 + R2 + Circle + Square and push Select, while the game is paused.
Choose the "Cheats" option, then push L2 + R2 + Square + Select at the 
cheats menu. 

Invincible enemies
Push L1 + R2 + Circle + Square and push Select, while the game is paused. 
Choose the "Cheats" option, then push Square + Circle + Select at the 
cheats menu to unlock the invincible enemies option.

Watch Kalisto introduction:
If you insert your game disc into a PC CD-ROM drive, you can watch
the Kalisto introduction with any movie player.

Secret images:
If you insert your game disc into a PC CD-ROM drive, you will find 
lots of images from the game in JPG format.

Screensaver:
Remain idle for a few minutes.