Cheat Codes
Disclaimer: We haven't been able to test all of these cheat codes so we cannot guarantee that they all work.
PlayStation - PAL
Enter in the INVENTORY screen
Level Skip: L2, R2, Triangle, L1, L1, Circle, R2, L2
All Weapons & Ammo: L1, Triangle, L2, R2, R2, L2, Circle, L1
Level Skip: L2, R2, Triangle, L1, L1, Circle, R2, L2
All Weapons & Ammo: L1, Triangle, L2, R2, R2, L2, Circle, L1
PlayStation - NTSC
Enter in the INVENTORY screen
Level Skip: L2, R2, L1, Circle, Triangle, L1, R2, L2
All Weapons & Ammo: L1, Triangle, R2, L2, L2, R2, Circle, L1
Level Skip: L2, R2, L1, Circle, Triangle, L1, R2, L2
All Weapons & Ammo: L1, Triangle, R2, L2, L2, R2, Circle, L1
PlayStation - NTSC-J
Enter in the INVENTORY/TOOLS screen
Level Skip: R2, L2, R1, L1, R1, L2, R2, Select
All Weapons & Ammo: L1, R1, L2, R2, L2, R1, L1, Select
Level Skip: R2, L2, R1, L1, R1, L2, R2, Select
All Weapons & Ammo: L1, R1, L2, R2, L2, R1, L1, Select
Sega Saturn
Enter in the INVENTORY screen
Level Skip: X, Y, X, Y, Z x4, Y, X x3, Start
All Weapons & Ammo: X, Y, X, Y, Z x4, Y, Z, Y, X x3, Start
Level Skip: X, Y, X, Y, Z x4, Y, X x3, Start
All Weapons & Ammo: X, Y, X, Y, Z x4, Y, Z, Y, X x3, Start
PC & Mac
Enter in GAME
Level Skip: Walk one step forward, walk one step back, release walk and turn around three times in either direction, jump forward
All Weapons & Ammo: Walk one step forward, walk one step back, release walk and turn around three times in either direction, back flip
Level Skip: Walk one step forward, walk one step back, release walk and turn around three times in either direction, jump forward
All Weapons & Ammo: Walk one step forward, walk one step back, release walk and turn around three times in either direction, back flip
Sources
Japanese PlayStation Cheats - Provided by Suikazeraider, via https://urawaza.in/ps/toomreids.htm
Japanese PlayStation Cheats - Provided by Suikazeraider, via https://urawaza.in/ps/toomreids.htm