Just wanted to let you know I managed to finish the game. Actually I finished it earlier shortly after I wrote my feedback and I edited my comment and scoring to reflect that at that time. In fact not much needed to change as I had already given you full marks on the Graphics and Audio, which I thought was done really well to establish the mood and atmosphere of the game!
It is fully understandable that you had to prioritize on the things that matter. That's what is most important. Also a 2GB game for a jam doesn't sound right, so it might not be a good idea to compare to, unless it's like a really detailed high quality game but I don't know about it so I cannot comment. Regardless, good job with the game and the story, I really liked the eerieness and the conversation between the player character and the fellow at the other end of the walkie-talkie, and enjoyed being immersed in the island as well as the 'thing' which I hope gets explained in a Part 2 or follow up! :)
And sure please do feel free to share your thoughts and feedback on my game as I am also looking to learn and improve on it!