Cheat Mode:

Finish the game at least once. Begin a new game, and wait until the starting

sequence ends. After Rain leaves, you and Hana can be controlled for the

first time, 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 and enter one of the following codes.

All Weapons:

At the small control pad enter “11692”.

Unlimited Ammunition:

At the small control pad enter “61166” .



Big Head Mode:

At the small control pad enter “10397” .

Concept Art:

On disk one, enter Left, Right, Up, Down, Down, Circle on the title screen.

The screen should flash red. Now you can access a library of concept and

development art (from the options, extras menu).

More Concept Art:

To get more concept art enter these codes at the title screen on these disks

disk2- Up, Up, R1, R1, R1, Square. 
disk3- L1, R2, L1, R2, L1, Square. 
disk4- O, O, Square, L2, Square. 

Walking the Walk:

In the later stages of the game, you’ll be forced to deal with monsters

that will appear out of nowhere. These creatures are released by stepping

in certain locations. You can train yourself to know the areas and not trigger

them, letting you pass almost unscathed.

The Boss Tip:

When you’re tackling the end boss with Rain, keep toggling the weapon and

item select buttons between your three weapons. You’ll be able to equip

the required weapon quicker this way.

Pay Attention:

There are a LOT of puzzles in Retro Helix that have their solutions explained

to you right before you do them, or the answers are on a wall opposite the

puzzle. Make sure you pay attention to everything in the game, especially

small details like wall hangings and verbal discussions, and never skip

a cinema.

GameShark Codes

Never Reload Assult Rifle Hana
8008bb540063
  
Infinite Assult Rifle Ammo Hana
8008bc0c03e7
  
Infinite Shotgun Ammo Hana
8008bc0e03e7
 
Never Reload Shotgun Hana
8008bb640063
   
Infinite Uzi Ammo Hana
8008bc0a03e7
  
Never Reload Uzi Hana
8008bb440063
 
Infinite .90 Pistol Ammo Hana
8008bc0803e7 
  
Never Reload .90 Pistol Hana
8008bb3c0031
8008bb3e0031 
 
Have Metal Hook Hana
3008bbed0001
 
Have Hacking Computer Hana
3008bbec0001
 
Have Fixer Piston Hana
3008bbee0001 
  
Have Machine Cog Hana
3008bbef0001 
  
Have Fixer Battery Hana
3008bbf00001
  
Have Drained Battery Hana
3008bbf10001
   

Have Wires Hana
3008bbf30001
  
Have Video Tape B Hana
3008bbf50001 
  
Have Video Tape A Hana
3008bbf40001 
  
Have Green Key Card Hana
3008bbea0001
  
Have Fixer Head Key Hana
3008bbeb0001
  
Have Fixer Chip Hana
3008bbe80001
  
Have Yellow Key Card Hana
3008bbe90001 
  
Have Mirror Hana
3008bbe50001
 
Have PearlHana
3008bbe40001
  
Have Mirror Segment Hana
3008bbe20001
 
Have Bandage Hana
3008bbe30001 
  
Have Bell Hana
3008bbe10001 
  
Have DNA Disk Hana
3008bbe00001
 
Have Blasting Caps Hana
3008bbde0001
  
Have Flash Disk Hana
3008bbdf0001
  
Rain: Infinite Shotgun Ammo
8008bf0e03e7
  
Rain: Never Reload Shotgun
8008be640063
  
Rain: Infinite Uzi Ammo
8008bf0a03e7
   
Rain: Never Reload Uzi
8008be440063
  
Rain: Infinite Assult Rifle Ammo
8008bf0c03e7
  
Rain: Never Reload Assult Rifle
8008be540063
  
Rain: Infinite .90 Pistol Ammo
8008bf0803e7 
  
Rain: Never Reload .90 Pistol Ammo
8008be3c0031
8008be3e0031
 
Deke: Infinite GL 150 Ammo
8008be1203e7
 
Deke: Never Reload GL 150
8008bd8c0063
 
Deke: Infinite Shotgun Ammo
8008be0e03e7
  
Deke: Never Reload Shotgun
8008bd640063
  
Deke: Infinite Assult Rifle Ammo
8008be0c03e7

Deke: Never Reload Assult Rifle
8008bd540063
  
Deke: Never Reload Shot Pistol
8008bd4c0031
8008bd4e0031
  
Deke: Have Peach
3008bde90001
  
Deke: Have Phoenix Amulet
3008bde80001
 
Deke: Have Genetic Marker
3008bdea0001
 
Deke: Have Diesel Fuel
3008bdeb0001 
  
Deke: Have Dynamite
3008bded0001
  
Deke: Have Archeology Key
3008bdec0001
  
Deke: Have Machine Key
3008bdee0001
   
Deke: Have Elevator Lock Key
3008bdef0001 
  
Deke: Have Ancient Gold Crank
3008bdf10001
  
Deke: Have Ancient Red Crank
3008bdf00001
  
Deke: Have Combined Mirror
3008bdf30001
  
Deke: Have Mirror Segment
3008bdf20001
 

Thanks to Revolution readers desdichado, Nick Bunzli and Deke!