>>45565817I forgot Houndour/Houndoom, which are found on Route 214/215 with the Poké Radar.
And here's the big list of Pokémon not available in DP without Pal Park or trading from a later version.
>Previous starters (27)>Previous mythicals (4)>Previous lower legendaries (11)>Previous higher legendaries (6)>Tangela/Tangrowth, Tropius (3)For 51 missing, making it 442/493.
You may also consider
>Regigigas (requires Regirock/Regice/Registeel from Pal Park or trading)>Manaphy (transfer egg from Ranger)>Phione (breed Manaphy)>Darkrai (requires outside event item)>Shaymin (requires outside event item)>Arceus (requires outside event item)Bringing it down to 436/493.
But lets make it a bit harder.
Without dual-slot mode (no GBA games)
>Seedot/Nuzleaf/Shiftry, Zangoose, Solrock (Ruby) (5)>Lotad/Lombre/Ludicolo, Seviper, Lunatone (Sapphire) (5)>Caterpie/Metapod/Butterfree, Ekans/Arbok, Growlithe/Arcanine, Elekid/Electabuzz/Electivire (FireRed) (10)>Weedle/Kakuna/Beedrill, Sandshrew/Sandslash, Vulpix/Ninetales, Magby/Magmar/Magmortar (LeafGreen) (10)>Teddiursa/Ursaring, Pineco/Forretress, Gligar/Gliscor, Shuckle (Emerald) (7)Bringing it down to 399/493.
And to make it even stricter, no outside trading with other games whatsoever, meaning
Trade evolutions
>Alakazam, Machamp, Golem, Gengar, Politoed, Slowking, Scizor, Kingdra, Porygon2, Huntail, Gorebyss, Rhyperior, Porygon-Z, Dusknoir (14)You can catch wild Steelix and Electivire and Magmortar were counted in dual-slot mode.
Version exclusives
>Seel/Dewgong, Scyther, Poochyena/Mightyena, Kecleon, Larvitar/Pupitar/Tyranitar, Aron/Lairon/Aggron (12)>Cranidos/Rampardos, Murkrow/Honchkrow, Stunky/Skuntank, Dialga (7)vs
>Slowpoke/Slowbro, Pinsir, Houndour/Houndoom, Stantler, Spheal/Sealeo/Walrein, Bagon/Shelgon/Salamence (12)>Shieldon/Bastiodon, Misdreavus/Mismagius, Glameow/Purugly, Palkia (7)Final total for a single copy of Diamond or Pearl: 380/493.