Solid shooter! I like how the realistic boss sprites contrast with the simple background shapes. It gives off an indie internet game vibe that's perfect on itch. 

I like the shooting mechanics, but I think the player isn't given enough room to dodge bullets. As someone else noted, it's basically impossible to complete the game without getting shot. I think if the bullet patterns had more space between bullets for the player to weave around them, it would feel more fair. 

I'm not a fan of the moving colors on the terrain. I actually feel motion sick while moving through the level - probably because the colors move up and down.

Overall, solid entry! 

Haha, that's so much fun. Not sure how relevant to the theme but pretty fun shooter.

And the whole visual effects, interesting but got me whoozie very easilly. I managed to beat the final boss regardless.