Wasn't entirely sure how to control the top player but somehow managed to get both players stuck in the top of the level and essentially dodged all enemies.
I like the premise and it fit the theme nicely, I think to make this a bit better a short screen at the beginning explaining the premise/controls would help a lot, even if it was just simply on screen text. Also look into making the esc key close the game as I got stuck in the game and struggled to alt-tab out.
Keep the games coming!