Ahhhhh, thank you so much! It's not superbly complex, but I'm glad that the feedback feels chunky, I wanted to try and implement a little bit of juice and make things feels impactful with deep sound effects and the screenshake, so I'm glad a little comes through! 200! That's bonkers, I'm glad I left the footsteps in now haha!
You are absolutely right on the difficulty, the spawn logic *did* have some variables in place to eventually tick down the 'spawn' timer (and turn up the heat a bit with spawning enemies), but I ran out of time haha! Changing the battery decay and adding some more enemies/enemy behaviour was a big goal of mine that I had to chop down a massive bit as time drew on, thank you so much for the feedback, I really appreciate it as my first completed 'loop' of gameplay, it's encouraging and I'm glad there were bits you liked! :D