This is definetly a new hardest, even thought it somehow took less than an hour to beat.
This mode is fun, you need to pay attention and keep track of a lot of things but getting nervous at the end makes it really hard, my main problem was how forgettable Oswald is but the rest is manageable if you pay attention to sound cues and have an idea of when Henry will reach the office.
Total Time:~58 minutes
0:00 - Highlights
0:30 - Treasure Hunt Hard Mode
6:40 - Winning
6:50 - Outro