Digimon World Re:Digitize - Complete Guide to Dukemon on First Digimon 1080p

Here comes an another Holy Knight Digimon!

Start by getting maximum happiness, minimum discipline, no care mistakes and avoid failing intermediate training.

Agumon to Growmon can be quite tricky due to the high discipline requirement.
Make sure Agumon has maximum discipline before the moment of evolution with the following stats:
HP - 800, less than 1000
MP - none, less than 2500
OFF - 80, less than 120
DEF - 80, less than 100
SPD - none, less than 80
BRN - none, less than 80

After the evolution to Growmon, remember to raise happiness back to max.

Train until you need more funds for the food and proceed to clear Gabumon and Vitium for some money, you can sell the Restore Floppies for more bits.

Growmon to MegaloGrowmon is very easy and hard to make stat mistakes with, you will need the following stats:
HP - 2500
MP - none, less than 2500
OFF - 300
DEF - 300
SPD - none, less than 200
BRN - none, less than 200

After the evolution you should head out and fight Vitium again and then recruit Greymon to unlock the Colisseum.

Your next objective is to make your way to the floor 20, fight Takato and then make your way all the way to the floor 40.

And then you train until you have the necessary stats to evolve into Dukemon and win the second fight against Takato and Dukemon.

MegaloGrowmon to Dukemon is surprisingly easy, even on your first Digimon, the following stats are needed:
HP - 5000
MP - none, less than 6000
OFF - 600
DEF - 600
SPD - none, less than 500
BRN - none, less than 500

And with that, you should have Dukemon on your first Digimon, which unlocks the path to VictoryGreymon on your second Digimon!