Hey there! Super slick gameboy look you got there!
I liked the visuals a lot, I would just add some particles to indicate the ghost died and make them flickey upon being hit, that would add some juice!
On the audio department, I think the music volume on the game over was too low, I barely noticed there was a song playing until I cranked my speakers up. Also, I believe the gameplay would benefit from having a background song, in the beginning when there aren't many ghosts, it gets a bit stale.
The controls were responsive, I just think an auto-fire when holding the fire button would be helpful. I managed to get to 104 but it became more of a challenge of how fast I could click than actually avoiding them up until 100.
Kudos on making such a charming game!
Also, proof I made past the challenge!
