trade it from diamond from a cheat or a special event...
You can't catch Arceus in Pokemon heart gold. You must bet it from Pearl, Daimond, or Platinum.
you cannot get him in heart gold only from events.
You take Arceus to the Ruins of Alph, the event will trigger from there and you will be instructed on what to do. To get Arceus in Heart Gold in the first place, it must be traded from Diamond, Pearl or Platinum.
you play the game
No, the movie Arceus that has been distributed in Japan is not the only Arceus that will work for the Heart Gold and Soul Silver Arceus event. That Arceus was special, because of the fact it unlocked a special Pichu event in Heart Gold and Soul Silver. Any Arceus will work for the event in which you can get a Level 1 Dialga, Palkia, or Giratina in Pokemon Heart Gold and Soul Silver.
You can't catch Arceus. You can only catch Arceus in Pokemon Platinum.
pokemon heart gold and soul silver. and heart gold and soul silver legends
you get him by trading through any sinnoh game
you first catch celebi
You can't. You can get him only through an event.
sorry u can only get it in platinum version
You have to trade it from Pokémon Pearl, Diamond or Platinum.