I really loved this game. There are bara typical elements - I won't deny I'm mostly here because of Uncle Hector, hee hee - but you can definitely grasp the inspiration to older adventure games, like the one about another Dave guy entering a mansion to rescue his girlfriend. There was a sponge there as well. Man, I feel old. :') Great work, congrats! It must have been so fun watching you both work at this little gem.
I Noticed a minor bug, not sure if this is intentional or not. You may actually enter the underground room by clicking on the door, even if it's still locked, because there's a random pixel that is read as "stairs" and not "door". I got it randomly, then purposely tried again by pixel hunting and it's there.