I don’t understand why the last few levels (the Cops vs Alien Robots one, and the Giant Rat one specifically) seem easier on Normal mode than they did on Easy. Bizarre. I made it through both of them without too much difficulty.
The final level, however, is an ENTIRELY different story. It’s the hardest thing ever. I’ve managed to get onto the second stage of it three times, and the third stage (briefly!) just once – and that’s in over an hour of trying. Even though I managed to get past the first stage, I didn’t actually “win” it, as missing just ONE circle is enough to prevent you from winning it, and even getting them all isn’t a guarantee – you need almost entirely “300” scores – “100” and “50” just won’t cut it. Bah.