It was fun when I played it. The story was lacklustre, but I got into shiny hunting after I beat the main story.

I then replayed it, this time with the self-imposed Nuzlocke ruleset, and I managed to have none of my Pokémon die until the ice gym, when my whole team died to some random trainer, causing me to have to restart. I then did the Nuzlocke again, and none of my Pokémon died until the FINAL post game fight, where two of mine died.

This game is not very hard. There are better Pokémon games out there to play.