You tried to fly with the good old physics trick.
Finish the game twice to have the both ending achievements.
Stay inside the broom closet for 10 minutes.
Stay inside the broom closet for 1 hour.
Duplicate a box 100 times.
You have chosen death.
You have chosen life.
Stay inside the broom closet for 10 hours.
Enter into mirror dimension for the first time.
Duplicate a box for the first time.
You know what you did.
I saw it. I swear to god. It hit the corner!