There used to be an event, but now, Arceus is impossible to obtain without the use of a glitch or cheating device.
It is completely impossible to obtain arceus without the azure flute or "Action Replay (hack machine) "
No, it is impossible to obtain without the event or some sort of hack
There are two ways to obtain the Pokémon Arceus, and one of them is unavailable. To obtain Arceus the "legitimate" way is to go to a Pokémon event. You will get an item called an Azure Flute. You must then go to the Spear Pillar and use the Azure Flute. Unfortunately, this event never occured, so this is impossible without cheating. To obtain Arcues by cheating, there are Action Replay Codes for obtaining Pokémon (don't ask me which one is for Arceus, I've stated all that I know).
its impossible arceus is a sinnoh pokemon
There is currently no Arceus event for Heart Gold, but there was an event for DPP where you could obtain Arceus to level 100 with the moves Spacial Rend, Roar of Time, Shadow Force, and Judgment. Currently that is the only way to legally obtain Arceus.
i am sorry but you cannot obtain arceus in Pokemon heartgold or soulsilver.
Without cheats, you can only obtain Arceus through a Pokemon Event.
You have to use an Action replay and add the Azure Flute to your key items. There should be a Nintendo Event from 2009-2010. Otherwise it's impossible to obtain.
Arceus is not in any Pokemon game legally. You can only obtain it by certain events.
Impossible unless you hack.
Actually. Arceus isn't legitamely obtainable in Pokemon Platinum. Or any 4th generation game for that matter. The coding for the hall of origin and arceus and his pokedex entry and everything is programmed in but the event item to access the Hall of Origin has never been officially distributed so you cannot obtain an Arceus without hacking or tweaking(although tweaking next to impossible).