Yes. To get Arceus, you must get an Azure Flute. They are obtained by special Toys R Us events or an Action Replay. Then, go to Spear Pillar and lay the Azure Flute. A staircase will appear. Walk up it and there you will find Arceus.
~Answer was from the one-and-only PokeNerd Ashmoon12~
yes like this
- Go to Jubilife City.
- Go to the third floor of the Jubilife TV Station.
- Talk to the man by the set. He will want to interview you.
- These words are different for each language version.
- When he asks you a second part of the question say 'Wi-Fi' and 'Connection'.
- When he asks you a question on the first part say 'Everyone' and 'Happy'.
- He will then say that the mystery gift is on the Main Menu.
- Go to title screen and click on Mystery Gift.
- Choose Get Mystery Gift and then choose receive via wireless.
- Use your gift and receive a SHAYMIN, MANAPHY, DARKRAI, or ARCEUS from a Nintendo Event.
- Usually, if you go to a Nintendo event, the Mystery Gift option should automatically show up if you are in the range of the Wonder Spot (the device that gives you the event Pokémon).
- The chances are not perfect, and if your friend didn't visit an event, then it will not likely work and it will say: 'There are no gifts to receive' or so.
P.S. You have to have at least one badge