Amazing game! I love your art style, it really adds a unique and distinctive quality to your games. I had a lot of fun in this playthrough, the increase in pressure as we released more experiments was well done and definitely had me paying attention to sound cues to identify where the threats were.
Not sure if the 'X marks the spot' note at the end is a 2nd ending, but I tried hunting around for it to no luck.
I'm looking forward to your next game!