While playing the tutorial I found that trying to read text nearly impossible as the screen size was so small, and with the waves behind it I couldn't really read what the text was supposed to say. I tried to set it to full screen but doing so made the game resolution 16:9 which means that enemies would come at me from off screen, and because the enemies are just as fast as my ship I couldn't escape from them as they just stayed on my ship the entire time. Also because of the fact that the ships do quite a bit of damage in a short amount of time, and because the cooldown between shots is so long the moment an enemy touches you with over half of its health is practically a death sentence.
Speaking of, every time I died I couldn't respawn as the button didn't work. So unfortunately I had to refresh the page every time I died. A few critiques that I have outside of that would be on the graphics side, as the sizes of the different game assets created a big problem that being mixels. Mixels are a phenomenon that happens when two elements in a video game or image are different pixel resolutions. It's important to keep this in mind when making games, and its even more important to keep in mind that your game elements should not be scaled or rotated in these situations! Just keep that in mind next time you make a game. Overall it definitely could have been better, though I also see a lot of potential for this game to become better if you just put more time into it. :thumbs_up: