Satisfying sounds and music, nice graphics, clever concept, and hats are a nice touch. I put more far more time into this game than any other one so far. Gameplay is fun for the first couple of games.
I enjoy the triple usage of the "The more you have the worse it is" theme. 1. The more papers you have the slower you more, 2. the more written pages you have the more enemies come after you, 3. The more written pages you have/ dashes used the shorter your range is.
I have found that the best strategy is actually pretty boring. I go around the map and collect the amount of papers equal to the score I want (I first write 10-15 pages to speed up this project,) then pick up a writing power-up, then run from enemies and dash whenever they get close to me, never attacking. I managed to get 63 points doing this before running out of pencil from dashing so much https://imgur.com/a/fFtuZ
I found that in the late game I would be overrun and forced to dash instead of fighting back since attacking the horde just slowed down the people in front and it would just give me more papers which would slow me down more which would make me fight more and this cycle would repeat until I mis-timed a swing.
I recommend that you lower the rate at which enemies spawn and lower their health but instead make them faster the more paper you have so that the late game would be more of a challenge of timing rather than endurance.