Use arrow keys or WASD to move space or click to shoot Q or P for shield if the cooldown is over the bar at the bottom is your cooldown bar. when it hits full then you have to wait for it to go to 0 before shooting again the bar at the top is your HP bar. make sure thats stays as high as possible because you can't get more (yet)
i've made it to wave 17 so far. i've made it to wave 17 without using a shield - code. most code by me. i got a tutorial for the moving backdrop but i forget where. also i didn't make the cooldown bar someone else did. (it was credit free but i will give credit anyway.) link below https://scratch.mit.edu/projects/298571739/ - art. all art was made by me using pixelartmaker.com. you can use the art with credit if you wish. here's the links Path 1: http://pixelartmaker.com/art/a433ce7b8f01d7c Path 2: http://pixelartmaker.com/art/d9811098b3eb3c4 Player art http://pixelartmaker.com/art/c50f56aee838768 Alien art: http://pixelartmaker.com/art/e0961174cd610b4 Thumbnail http://pixelartmaker.com/art/fef08db556c7b4f - music. music was made in about 5 minutes by me using beepbox.co - sound effects. all from the scratch library,