Ich habe alles geholt, was ich holen musste.
Ich glaube, das war der erste Test, den ich geschafft habe.
I was especially excited about that masculine accusative singular relative pronoun, especially in combination with subordinating word order. There were 3-4 examples of this. I don't believe I heard a single error in basic grammar and syntax.
By the way, the videogame was "School of Dragons," based on the movie How to Train Your Dragon.
In his description this morning, J was also using a lot of terminology from this book we have just acquired and been reading.