This is a really cool system. Movement felt great, and disabling lighting made my pc run at a really good framerate for once. It took some getting used to, but once the aim with mouse while qte is onscreen clicks, it's a fun system to work through the levels. The only thing I didn't like much was that the levels felt a bit samey. I can think of one or two levels that felt unique and fun by utilizing the red ball things. Everything else was "move right while killing enemies". That being said, the story is in a good place, the enemies feel diverse, and the challenge feels good all the way through. You've put a lot of polish into this and it shows.
Great job!