WASD to move, R to reload, and Space to shoot. 1, 2, 3 to switch weapons. You can only shoot in the direction you are moving, otherwise, you stop moving and turn to face the target with every weapon except "light weapons" which can be fired while moving.
I improved it so much that is basically a different game. This project is a bunch of sprites, UI and proof of concepts of how a 2D scratch Helldivers game would work.