Very cool submission. The models and level design looked very appealing. The sounds were well-made, too.
I feel like the timer should have ended once I had 3 items, or perhaps instead, I could walk out the front door to manually skip the timer, or something.
Like I said, the level design was appealing, but the flow of the map was also nicely paced. Additionally, it's cool to be able to see obstacles further off that I know I'm going to reach eventually.
I feel that jumping should have been a base item. My entire run depended on whether I got the necessary items at the start, which diminished the potential magic of messing around with other interesting items.
The music was fantastic, thematically accurate, and rather varied in mood, from track to track.
The slowfall item seemed to be a bit buggy when jumping over the initial canyon. It wouldn't launch me up anymore, making it difficult to get the needed height to cross.
While seemingly needing certain items to even succeed at all, I found it to be frustrating, the idea of racing to pick up items at the start, in preparation for your run, is very cool, and overall, I still found it rather enjoyable to explore the house.
Again, cool submission.
PS
The dash felt very good.