PS2 Digimon World 4 Cheats

[librilzVIP]

Unlockable: Digivolutions
Agumon - Guilmon reach level 16
Dorumon - Agumon reach level 16
Guilmon - Veemon reach level 16
Veemon - Dorumon reach level 16

Unlockables: Ultimate and Mega level digimon in Normal Mode
Clavisangemon - Complete Undead Yard with Veemon
Clavisangemon - Complete Item Road with Dorumon
Herculeskabuterimon - Complete Undead Yard with Guilmon
Herculeskabuterimon - Complete Item Road with Agumon
Wargreymon - Complete Undead Yard with Agumon
Wargreymon - Complete Item Road with Guilmon
Weregarurumon - Complete Undead Yard with Dorumon
Weregarurumon - Complete Item Road with Veemon

Unlock 4th MP Move
Increase Your Blast Technique to 1000.
Unlock Hard Mode
Finish Normal Mode Once.

Unlockable: Imperialdramon Fighter Mode
Complete the final side-quest, Worm Hole Dungeon, in V. Hard Mode with any of the Digimon.

Source