Norah didn't write that, did she?

Find 50% of the story logs.

Play an ancient instrument.

You have played the notes of the music box of Chapter 4 on the piano in Chapter 3.

Survive the troll attack on Hogsmeade

Complete the introduction and finish the Sorting Ceremony

Sit through the end credits

Play the whole game without skipping a cutscene

Reach yesterday without turning the stereo off

Flush 50 objects through time

Hoagie uses battery with Chron-o-John instead of plug

Red makes a super battery with only a little help from Hoagie