Thanks for playing! Yeah, I know where you're talking about and those doors don't open for the switch in the room to the left of it. That switch opens an additional door in another room that you've already visited on the left hand side. I also forgot to put in what the dive was supposed to do which was basically kill cows, but I was exhjausted at that point haha. I actually wondered how to communicate the passive life gain. There is a sound effect, but if I had the energy and time to polish it, I definitely would do something with the healthbar visually in addition to the sound.
I haven't seen another duck game in the jam yet. That'll be interesting haha. Thanks for playing again.