Use the WASD keys to move, and use the mouse pointer to point at where you want to shoot. Hold the mouse down to shoot. This is just a test project, I might make an improved version later on. The script for the enemy is quite basic, and there are quite a lot of glitches, but those will all be improved later on. This is probably the most sophisticated project I've made so far, and improvements are definitely on the way!
Standard platformer code, you've probably seen it a lot.