How the fuck can you play emerald and not primarily play the battle frontier? Its literally the only hard content in this game. It gets even harder if you decide not to use legendaries or salamence/metagross. No wonder sinnohfags make fun of you.

Every arena has a different weakness.

>battle palace is bad
Learn to bulbapedia. Its literally impossible to miss in here

>pike
You need to prioritize shit mons with great abilities

>factory
Learn about strategies in uu

>pyramid
Hard. Get a dodrio with run away. You'll need it.

>arena
Scary because you can't switch out

>dome
This one was a miss for me, but tucker is the hardest boss in the game other than maybe pyramid kind brandon

>tower
Every game has this