Nice game, and impressive as always! Especially for a solo game.
I love the enemy pixel art and the effects like camera shake.
I second what Stoff said, frantically clicking the mouse gets tiring pretty quickly considering how many enemies spawn in. Also there was no way to recover health (that I could find), although perhaps adding some warning/indication enemies are about to shoot could offset this, as my poor attempts at dodging felt down to luck XD
Fantastic presentation though!