After defeating the 7th Gym Leader, you use Rock Climb near the signpost that says "Lake Acuity" near Snowpoint City. Talk to the rival and head into the gap by the tree that signals more space is there.
By the lake, you'll have to battle the Galactic bosses, if I'm not mistaken, and then you have to follow them around the map. I'm not going to go into details, but you need to find them and continuously follow them until you reach Spear Mountain or something along those lines. There, you and your rival will battle Mars and Jupiter again, and a whole load of events over which you have no control will unfold.
When you're in the Distortion World, you need to get round all of the obstacles to get as far down as the bottom.
The boulders that could be pushed need to be pushed into the pits immediately before the three Pokemon of the lakes. The you can head down and battle Giratina.
Either battle or capture it, but I would recommend saving your Master Ball and using Timer/Nest Ball, as Giratina is a low level and there are still Dialga, Palkia, Mesprit, Azelf, and Uxie at least in the game.
---Note---
My friend had cheats code on her game, and she traded me three Master Balls (cheats code enables 995 of them) which I used on the three Pokemon of the lakes. It makes it easier but for all you guys who don't have cheats code, Timer Balls and Nest Balls (and a whole stock of Poke Balls) do the trick. Oh, and also a Pokemon who:
*Knows either: Block, Mean Look
OR
*Has the ability: Shadow Tag, Arena Trap
---PokeFreak
BTW I have some Spiritombs temporarily going spare if anybody wants to trade over WFC.
To get giratina you either have to catch him in the shadow relm, or he'll go back to his cave in the spring were you'd find him in diamond or pearl.
Birds:
Once you finish your pokedex, and get your national, go to the pal park, once you have your scene with profeser oak go talk to him at his house in eterna city. He'll tell ya about the mystical bird Pokemon then once he's done they'll start roaming around sinnoh, like mespret, Have Fun!
to get them all (including arceus and the azure Flute),you MUST have the national pokedex.
They are not found in the wild in Pokemon Platinum.
try to catch your legendary. It varies on which legendary depending on what starter you chose.
the 486 legendary is yo mama @#$%@
You cannot catch the legendary palkia on pokemon platinum but however you can use action replay to get it (most likely cheating)
Arceus (With Dragon plate)
Noooooooooooooooooooooooooooooooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ARCEUS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
no
Got the website in related links. It will tell you where to find the legendary pokemon, what levels they are and what they look like.
Empoleon is not a legendary Pokemon. It is the final evolution of Piplup, one of the starter Pokemon in Pokemon Diamond, Pearl, and Platinum.
it is not possible as legendary Pokemon are not breedable
you have to either catch a legendary or raise a Pokemon