Oh this is a cool concept. Very cool use of the theme, although it would be nice if your actual scale actually mattered to gameplay. Maybe giant snake arms breaching the hull... 96 hours isnt long enough for that.
I had fun with this really difficult (as it seems, unless im missing something) game. I was getting overwhelmed only a minute after the fight began!
Also, it seems you're keeping your player health and boss health on some global script. When I lost and got into the game again, the HP state was retained and I lost on the first hit I received, so the game required a reset for that.
BTW, you had the cool robot art with the cool points for when you need to fix things, but I think making that a full minimap would help a ton with navigating the robot.
Overall really cool idea that I think can actually be exapnded upon quite a lot!
Best of luck