amp plains 7F. but you will need mystery part-enigma part. get it on link http://upokecenter.com/games/dungeon2/guides/wondermail.php
wonder mail
No,arcus is not in mystery dungeon 1 or 2
No.
In the actual story, you have to defeat Darkrai. However after that Manaphy will wan't to join the team, and he will unlock a dungeon called Marine Resort.
No, Wonder Mail can be used only to unlock missions.
Mystery Dungeon 3 isn't out yet. And no, they won't work.
The land, Pokemon, and dungeons are extremely different.
You don't!!
there is no shaymin (or arceus) in mystery dungeon 2. in Pokemon mystery dungeon explorers of the sky (check out serebii.net for that), there is shaymin and arceus, but i don't know if shaymin is recruitable.
Arceus and Shaymin are the only two Pokemon of the series not to feature in Pokemon mystery Dungeon 2
Pokemon Mystery Dungeon 1: Red Rescue Team/ Blue Rescue Team Pokemon Mystery Dungeon 2: Explorers of Time/ Explorers of Darkness
The release date for Mystery Dungeon 2 in Europe was July 4, 2008.