Cheat mode
Successfully complete and save the game on any difficulty setting. Start a new game from the saved game file, and wait until the starting sequence ends. After Rain leaves, you should see a small control pad on the left-hand wall immediately after the screen switches. Walk up to it and the "Use" option should appear. Press Triangle. Enter one of the following codes to activate the corresponding cheat function:
All weapons
Enter "11692" at the small control pad.
Infinite ammunition
Enter "61166" at the small control pad.
Big head mode
Enter "10397" at the small control pad.
Hints :
Flash Disc puzzle (Rain)
80th Floor Buttons: 4, 3, 2, B, D, C
86th Floor Buttons: 4, 3, 2, B, D, A
Room with computers (Rain)
The right computer will turn on the left one. Once you solved the left computer, the water will drain and Hana will be able to get through.
Right Computer
Red Cursor (Row 1): Press 2, 3, 4, 5, 1, right switch.
Blue Cursor (Row 2): Press 3, 1, 4, 5, 2, right switch.
Yellow Cursor (Row 3): Press 4, 5, 1, 2, 3, right switch.
Left Computer Button Presses: 2, 5, 10, 13, -1, Hit "OK".
Pulsating blue and yellow bars (Hana)
This puzzle is located in a room with two workers, after escaping the rats and getting Video A. You must look at the panel on the left side of the screen for the solution. From left to right: 5 bars, 4 bars, 3 bars, 2 bars.
Locked door code (Hana)
View Video B, then enter as "92572" a number to gain access.
Geometric puzzle (Rain)
Use the D-pad to manipulate the shape: Shape 1: Down, Up, Down, Up, Down, Up, Down, Up
Shape 2: Up, Down, Up, Down, Up, Down, Up, Down
Shape 3: Up, Up, Up, Up, Down, Up, Up, Up
Shape 4: Down, Down, Up, Down, Down, Down, Up, Down
Shape 5: Down, Left, Down, Left, Down, Left, Down, Left
Shape 6: Down, Right, Up, Left, Down, Up, Down, Up
Escaping the rats (Hana)
You cannot shoot the rats because there are too many of them. Instead, walk towards the door. Once they start breaking the door down, press L1 to turn 180 degrees. Quickly run towards the broken ladder, at the very beginning of the room. You can get Video A after the rats enter the hole.