I liked it! I did also go for the ending without opening any boxes. I noticed a change in dialog, but everything else was the same ending as the first playthrough. Maybe tweak the alternative ending a bit? Your call. Either way, unnerving and good!
Downloaded twice, ending doesn't trigger. Just the window open, fireplace burnt out. Looks interesting, but after 3 tries, nothing happens with a scene, just stuck in a house.
Fun to play! Worth the price of admission. I'd say see if you can fix the part where you drop off the last box in storage. Potrick always blocks the doorway and you have to climb around him to exit.