-You should be able to digivolve him from agumon by taking the greymon digivolution path. On dusk you can fight him when you go tho the rivals citie but on dawn I'm not shure.
EDIT:
You can get him on either game...just get at least 100% scan of either Agumon or Koromon from Limit Valley. Then, go to your Digi-Farm, and check the Digi-Lab computer. Use the tab "Digiconvert" and convert Agumon or Koromon scan data into the Digimon itself. Afterword, just get the requirements you need to get MetalGreymon.
It matters about the digimon, if you pass time it might digivolve to another digimon while some of them digivolve to another digimon if you have like 3 or more battles to make it digivolve. for an example: Greymon will digivolve to MetalGreymon with at least 10 battles, or he'll digivolve to MetalGreymon(Virus) if he has 30 Vaccine AP or he'll digivolve to SkullGreymon if you pass time. understand?
metalgreymon or rizegreymon with 2 egg reverts 30 battles and 50% wins
In order to get a Digimon's aptitude up in "Digimon World Dawn," you would have to degenerate your Digimon to a Digi-Egg.
Degenerating the digimon
Valkyriemon is the name of the valkyrie Digimon.
You cant get it in dawn or dusk
most are unlocked through the story mode. others require you to have a certain natured digimon on the farm island. heres a list for dawn and dusk. Dawn: Holy Lazy Tapirmon Lazy Starmon Lazy Monzaemon Dragon Cool Dinohumon Scared Growlmon Cool Veedramon Prissy MetalGreymon Lazy Megidramon Aquan Scared Gomamon Cool Gwappamon Prissy Octomon Lazy ShogunGekomon Cool Vikemon Bird Lazy Saberdramon Wild Peckmon Cool Karatenmon Dusk Farm Quest digimon list: Dark type Lazy Tsukaimon Scared DarkTyrannomon Wild Vajramon Beast type Wild Ogremon Wild Grizzmon Lazy Leomon Lazy Mammothmon Cool MegaGargomon Mutant/Machine type Lazy Guardromon Cool Andromon Scared Mamemon Graceful PrinceMamemon Cool KingChessmon Insect/Plant type Graceful Floramon Cool Woodmon Lazy Okuwamon hope it helps.
You don't. X-evolution digimon are not obtainable on digimon world dawn or dusk. I should know since Ive completed the entire digimon galery.
you can't sorry but ChaosGallantmon Chrono is un obtainable in digimon world dawn/dusk
It depends on what Digimon you prefer. If you prefer Holy, Dragon, Bird, and Aquan type Digimon, you would want Dawn, because it features these Digimon. If you like Dark, Beast, Insect, and Machine type Digimon more than Holy, Dragon, Bird, and Aquan types, then you would want Dusk. dawn
no
In "Digimon: Dawn and Dusk" the Chichudarumon can be hatched from the Beast Egg. One can also be found in the Magnet Mine.