Gigalith does not evolve. Boldore evolves to Gigalith when you trade it, rather than at a specific level.
Roggenrola evolves into a Gigalith with it is traded.
Roggenrola evolves into Boldore at level 25. You can evolve Boldore into Gigalith by trading it.
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
Lillipup can evolve at Level 16.
level 29
you have to trade it at any level, and you get a gigalith
Roggenrola evolves into a Gigalith with it is traded.
Bodore evolves into Gigalith when you trade it.
just trade and it will evolve into a gigalith
Roggenrola evolves into Boldore at level 25. You can evolve Boldore into Gigalith by trading it.
Boldore evolves into Gigalith only by trading. So you will have to find someone to trade back and forth with so that he will evolve.
Boldore can evolve at any point since it evolves once you trade it and both it and its evolved form of Gigalith have the same level-up moves so evolving early or late does not matter in Boldore's case.
Level 43
Level 64
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
Throh don't evolve in Pokemon Black and White.
Audino doesnt evolve in Pokemon black and white