Kill the Cubes

This is a small game I made where the objective is to destroy red cubes as they come on the screen while not letting them hit you. There are 3 types of enemies: One tracks the player movement and goes to the player, another bounces of the boundaries of the screen, and the last slowly moves across the screen until it exits. The player can pick up health and ammo which will spawn as green objects. The current amount of time needed to survive is 90 seconds, at which point enemies will stop spawning.

Controls:
WASD or arrow keys to move
JIKL to shoot