
You know what's funny is that all three of these games you've talked about are ones I've played and reviewed.
If you still want to get the achievement for winning a battle without Aurora, try this. Swtich her out in one battle and win. And then start a battle with another bad guy. She still won't be in the party so just make sure to win the battle without switching to her. I think you'll get the achievement then.
I played through LEGO Hobbit with my brother, but I had no idea what was going on because I've never seen the movie or read the books.
I liked Weapon Shop de Omasse, but some folks didn't, so keep that in mind when playing. It's not Level 5's best work, but it is certainly unusual.