Can someone help me with finishing my National Dex in Pokemon Diamond?

Question

Pokemon I must see in Diamond:

Toterra
Infernape
Alakazam
Golem
Rampardos
Machamp
Combee
Vespiquen
Cherrim
Whiscash
Rapidash
Sudowoodo
Blissey
Clefable
Chatot
Spiritomb
Gible
Gabite
Gachomp
Snorlax
Riolu
Hippowdon
Drapion
Carnivine
Finneon
Milotic
Uxie
Azelf
Palkia
Manaphy

Thanks =P

Sorry I meant help me GET my national dex by FINISHING the old one...
I just got the game recently...

Answer 1

Toterra - depending on your starter. Rival / Lucas / Dawn will have it.
Infernape - same as torterra
Alakazam - elite 4
Golem - elite 4
Rampardos - a trainer has it
Machamp - trainer has it
Combee - trainer
Vespiquen - elite 4
Cherrim - trainer
Whiscash - fish it or elite 4
Rapidash - elite 4
Sudowoodo - elite 4, found on pearl, trainer
Blissey - trainer
Clefable - trainer
Chatot - trainer, found in wild, a guy will trade you chatot
Spiritomb - elite 4
Gible - dragon trainers, found in hidden entrance in wayward cave
Gabite - dragon trainers
Gachomp - elite 4
Snorlax - Rival
Riolu - get egg from Riley in Iron Island
Hippowdon - elite 4
Drapion - elite 4, random in safari game
Carnivine - safari game
Finneon - trainer
Milotic - elite 4
Uxie - lake
Azelf - lake
Palkia - Cynthia's grandma
Manaphy - not required to obtain national pokedex

In other words, you have to fight everyone you see.

Answer 2

u get a lot of new things to do. first, go to snowpoint city and take the boat and u can go to survival area, resort area, and the battle arena place. that gives u a lot of benefits and stuff. Then you can also go to sandgem town and have swarms, where when you take to the little girl in the southern house, you can find random groups of pokes u couldn't normally get. also in the poke mansion, there will b certain pokes in the garden if u talk to that old fart. the game gets alot better.

Answer 3

just search in all the routes for trainers and after the leugue an old lady will show u palkia