I love the concept of having to save someone trapped in a submarine like this! The tutorialization was sparse, but I got the hang of the crafting mechanic after spending a day to faff around with it.
However, I got stuck at the point where I had to deliver a propeller to the submarine itself: there was a hint prompting me to 'pass over the deliverable to the submarine', but no matter how hard or fast I mashed the E key, I could not interact with the submarine and Nyla remains trapped :( Either I did something wrong, or it was a bug, and I have no idea which. Either way, loved it!