What a fun and hilarious idea, who brings a pillow into a knife fight?
Simple and easy to understand mechanic, you did a great job on the visual and sound effect, they feel visceral and cartoonish, perfect for the tone of the game.
I do find the game a little difficult, maybe you can start with 1 enemy first, so the player can get used to the game mechanic, then you can spawn more enemies.
In any case, this was fun! Good Job!