It's the first game in this jam that let you slow time rather than freeze something completely. I think it works well here because it makes the game easier. However, bullet time is not really new. And usually you can only do it for short periods of time, while it seems like in this game you can just slow down time for the whole game? Which makes it much easier to play. So I didn't really get the point.
For me on a Mac keyboard it was hard to press left ctrl btw, would be nice if you also allow right ctrl! Or shift maybe.