Thank you so much for playing! I'm glad you enjoyed it!
You're absolutely right about it not being challenging. My devlog on the game goes deeper into my thinking process, but basically I couldn't get pathfinding working for the "creatures". I initially planned to have static turret enemies set up that would shoot you, but I ran out of time and decided to focus on the story and atmosphere of the game.
As far as the theme, the ending really is important to that. It can be interpreted a number of ways, so I totally get if the theme is lost in there. However, I did develop it with the theme in mind and thought it came out pretty well, albeit in a darker, less in-your-face way.