You are a smiley face. Small, angry faces want to hurt you.
Get out of their way with WASD or the arrow keys. You can be hit twice before smiley guy dies. If you can live long enough, the game starts rewarding you with points.
If you're overwhelmed, press the space bar to start a new wave and refresh your face-person. This removes all the angry people but also resets your score multiplier. (It does keep your score intact, though.)
This was made for the Weekly Hour Game Jam on week 19 of 2017.