I wouldn't know it all (I still have more to do on mine...), but I do know that there is a lot more to do after Darkrai. Here, a starting point: Go to the Guild and talk to Sunflora. From there, have fun.
sunflora is before darkrai. After darkrai the only things left ot do is make money recruit Pokemon (like lugia mew etc) do missions to get like secrect slab or mystery part (so u can see the ledgendaries) and that's about it Resources:Own experience
U find Darkrai in Dark Crater.
Fight Darkrai
money shot
in azurills nightmare. darkrai is the one causing the nightmare and is the boss of this dungeon.
Open them again!
It's the Darkrai battle, as also seen in Pokemon Mystery Dungeon Explorers of Time/Darkness.
go to surounded sea 3f with a mystery part or secret slab
No he's in explorers of Time,,darkness & sky
You get it by doing lots of missions. Then, you get it from a Elekid.
Darkrai can be found in several dungeons afer you defeat him at Dark Volcano.
Go on the internet and get wonder mail.
well you have to defeat darkrai after palkia and dialga.i got to warn you its pretty hard.