>>39599276It's decently hard I'd say cause the Rainbow Brigade actually uses some strong Pokemon, and they mostly show up in really long dungeons.
It has pretty much the difficulty I'd love to see in a real Pokemon game.
As for the length, it's long for a romhack but not super long compared to an actual game. But they're actually still working on it because most of the post-game areas were unfinished when it originally came out.