To get key(s) go to solar cave and you got to search for it because they r a little hard to find. YOU NEED TO GET THE DUNGEON STORMY SEA IN ORDER TO GET TO SOLAR CAVE.
In Aegis Cave
Pokemon cannot be traded in the Mystery Dungeon series.
No.
NO
they are on the floors of higher leveled dungeons.
there is no Pokemon mystery dungeon shadows of almia....
Yes, but only in Pokemon Mystery Dungeon: Explorers of Sky.
Pokemon cant on mystery dungeon
You can't breed Pokemon in the mystery dungeon games.
in some dungeons there will be doors you use the key on the doors while facing them
Pokemon mystery dungeon explorers of time.
Yes there is a unknown dungeon in Pokemon blue mystery dungeon! You'll have to connect with your friends if you want to go there