This is just a remix of @Will_Wam's "Scrolling game test" to show how I would change the controls. Check it out, it's really cool. Move with the arrow keys or WASD. Select the crossbow with your mouse or "Q" then click and hold to pull the string back and release to fire the arrow (aim with the mouse)! Also, you can select the sword with the mouse or with "E" and jab by clicking. The yellow circle is a spring, and press space to jump.
All art and most of the coding credit to @Will_Wam. I changed the controls. Unfortunately, my changes broke the wall collisions. I have no idea how to restore them.