Seems a bit abnormal. What's the justification for this being a misc. category?

There are no clear rules set for it yet, so unless those get defined it shouldn't be an actual category (nor does it have any runs submitted)

Some rules that might be interesting for it could be:

• Gold trophies for every mini-game
• X amount of Brickster Bots (if there is a limit of them (I'm not sure about this))