You will need to level up Haunter to level 50 to evolve it in Pokemon Resolute.
You can find Haunter in SoulSilver in Route 8 at night. Additionally you can catch a Gastly at night in the Sprout Tower or the Bell Tower and then you can train it until Level 25 which is when it'll evolve into a Haunter.
Haunter evolves through a trade.
you have to trade
no level you have to trade dude
You will need to level up Haunter to level 50 to evolve it in Pokemon Resolute.
You can find Haunter in SoulSilver in Route 8 at night. Additionally you can catch a Gastly at night in the Sprout Tower or the Bell Tower and then you can train it until Level 25 which is when it'll evolve into a Haunter.
You have to trade it to evolve it.
Haunter evolves through a trade.
Gahstly will evolve at lvl25 to Haunter then trade haunter to evolve to a Gengar.
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
you have to trade
You have to trade haunter to a friend to evolve it.
no level you have to trade dude
Haunter will evolve into Gengar when it is traded. It doesn't matter what level it is, just trade it with someone and when they get it it will evolve into Gengar, then get them to trade it back to you.
Haunter can level up and evolve. It evolves by trading with another player.
You have to trade the Haunter to evolve. I learned the hard way. It got to level 59 and I traded..... it evolved!