Spinda is not capable of evolving further.
To evolve Mantyke in pokemon black/white 2 you have to level it up with a remoraid in your party then it will evolve into mantine
In Pokémon Black 2, Dragonair will evolve into Dragonite at Level 55.
Lairon will evolve once it hits Level 42.
You can evolve a Gabite by leveling it up to level 48.
In Pokémon Black 2, Croagunk will attempt to evolve once it reaches Level 37.
Pawniard will evolve at Level 52.
level 42 to glalie
level 30
Darumaka will attempt to evolve once it reaches Level 35.
Shelgon evolves into Salamence at level 50 in Pokemon black 2.
i have pokemon black 2 and he evolved at level 40
Emboar at level 36