How does your submission match the theme?
It matches the theme by letting different effects from a single action affect the character and the world at the same time. For example, the way you attack enemies has either three or two purposes. Stomping kills them, gives ammo and increases your combo. Shooting damages them and gives points. Failing an attack not only can result in damage, but also resets your combo.

Your points also have two purposes, to increase the speed of the enemies, which increases difficulty, and to keep track of how high a score you got! Points were also thought to be a currency, to let you purchase upgrades. Spending points would decrease the game speed, lowering difficulty.

Third-party resources
Phaser(https://github.com/photonstorm/phaser-ce/blob/master/license.txt), Piskel(https://github.com/piskelapp/piskel/blob/master/LICENSE)

Contributors
Erik (programming) and Ruth (graphics).