Now monster houses have always been a problem for me too! How i deal with them is first do
your partner's tatic get away from here then you just walk out while all the pokemon
follow ya and you can battle them one by one. This sometimes doesnt work so dont get your
hopes up. Porygon-z is a speedy physic so be careful. So use crunch i believe it's super
effective and might make it flinch. As for munchlax i would use zen headbutt. Ah,primal
dialga,that son of a ***. So if you do get a seed do use it! Use it when your up close to
him he shouldnt dodge. Now you should use ice fang and superpower. And use crunch to make
him flinch (hopefully he will) munchlax would probably only wants to use zen headbutt and
metronome. Last and not least roar of time... It does alot of damage he most likely want
use it if you use a few seeds and make him flinch. So if he does hope you have some oran
berries. Now if you got all of that then you should defeat dialga. It might take a few
more tries though. Hoped this helped!

You might want to get an action replay and a mobile scarf.