Lv.69.
No because hammer arm is a 4th generation move it didn't exist in emerald or any Pokemon game before it.
Metagross learns Hammer Arm on level 45.
i don't think he can learn it leveling up you can breed a pokemon with hammer arm and boy or girl emboar
Ursaring learns Hammer Arm at level 67 in Pokemon X, Y, Omega Ruby, and Alpha Sapphire.
Lv.69.
I guess that would be Earthquake. It learns Earthquake in level 52. But Hammer Arm is also an awesome attack that Swampert learns. Swampert learns Hammer Arm in level 69. Hope I helped :)
No because hammer arm is a 4th generation move it didn't exist in emerald or any Pokemon game before it.
Metagross learns Hammer Arm on level 45.
Currently, the last move Swampert learns is 'Hammer Arm' at level 69 however you can teach it HMs or TMs any time after this level.
level 67
In level 67
i don't think he can learn it leveling up you can breed a pokemon with hammer arm and boy or girl emboar
Ursaring learns Hammer Arm at level 67 in Pokemon X, Y, Omega Ruby, and Alpha Sapphire.
Swampert's ultimate moves are endeavor, earthquake, hammer arm, and mud bomb
Sudowoodo learns Hammer Arm at level 47 and Wood Hammer can be learned by going to the Move Reminder. This applies for Generation VI games and may not work in older generations.
Rampardos learns Hammer Arm as an Egg Move, which the father would need the move Hammer Arm in his move pool to pass down to the Cranidos.