I had fun but it stops getting harder at some point and you just curb-stomp everything as soon as you get the lightning bolt. There's also a few other problems:
- The big orange "boss" enemies stop shooting completely once you get far enough.
- The "boss" enemies also deal barely any contact damage to your character, so you can just stay inside their sprite and take them down without effort. I think this also applies to the big red enemies.
- Both the red and orange enemies keep moving while the game is paused.
- Your character's hitbox is bigger than its sprite which I really dislike, especially in shoot 'em up games.
Also it seems like you intended for this game to be played in the browser, which doesn't happen. I had to download the game and open "index.html" in my browser (Firefox) which didn't even work (WebGL not supported in file:// urls) until I messed with the config.
Otherwise it's a fun little game. The explosions and other special effects look good and shooting stuff is satisfying.