First choose the ranger net icon, connect to Nintendo Wi-fi, pick a special mission and then you can play on that special mission.
Special mission on the Ranger net
You can do that mission in both ranger games. Pokemon Ranger and Pokemon ranger shadows of almia.
If you downloaded the special Darkrai mission you can transfer it. The special mission has expired and is not available anymore without hacking.
Yes, you can access it from pokemonranger.com
u need Pokemon ranger shadows of almia download special mission rescue maniphy egg complete the mission then transfer it with another DS
No, you do not get an Egg after beating Shadows of Almia but you can get an Egg if you beat the Special Manaphy mission but it is no longer available for download.
it was available in a ranger net mission but its not available any more Shaymin is not in Pokemon shadows of almia
beat mission 5
no
You can't get Arceus in Pokemon Ranger Shadows of Almia only in Pokemon Ranger Tracks of Light. You can get Arceus in Pokemon Ranger Tracks of Light as a wi-fi mission "Arceus's Pledge" where the mission takes place in the Air Fortress.
You cannot get Giratina in Pokemon Ranger Shadows of Almia, You can only get Giratina in Pokemon Ranger Tracks of Light on a Wi-fi Mission called "Giratina's Griseous Orb"
You have to arrive at the place