Thanks for playing! I did have a tough time balancing the difficulty of the game. It seemed too easy to me as well, but I wasn't sure if that was because I played it a million times haha.
Originally, I did have the player die by having their effectiveness drop to zero, but did not have a clear victory goal. When I added in the high score piece at the end, I ended up removing the death mechanic and just relied on the drop in effectiveness.