You can use WASD or the arrow keys to move around. If you press space, then you will slam towards the ground. This is useful if you are too slow to hit any enemies. You have a limited amount of slams, which is defined by that meter on the left of the screen. Hitting enemies add up towards more slams.
Just so you all know, the "points earned" isn't anything special yet. At this point in the game, points are just numbers. I got this idea from a couple of flash games. I had some inspiration and I used it to create this. I would really appreciate it if I got some feedback on where I should go with this. The sprites are definitely not final, they are just place holders. The pixel art sprites might be permanent, but I'm not positive. The Ground Y variable isn't where you are in relation to the ground, it is where the ground is. It basically is if the screen were really huge, that is where it would be on it.