I liked the art style and the music! Game had a lot of personality.
The music was fun and the sound effects were cool for the most part. I just disliked the walking sound, it seemed a bit annoying, like food being chewed. The shotgun and explosions were rad!
The map was nice, the sprites for the characters and ghosts were pretty. I got some issues with some text being cropped at the left most of the screen, but perhaps it was some WebGL issues, no biggie.
I managed to get to the Finale, although I gave up trying due to some issues with the collisions. Many times I wouldn't be able to enter a corridor even though the character was pretty much aligned. Being blocked made me panic and then I'd run out of time to escape the ghosts. Sometimes the ghosts seemed to not die with a shot, not sure if that was on purpose or if there was some collision glitch. I happened to not die by touching a ghost once when I was having trouble entering a corridor and the ghost seemed to have some glitch too.
Some minor issues I found were that even if you win, the ghosts keep on moving and the character can still die. There were some odd situations in which the character died going upwards and didn't trigger the death animation with the hat falling, or when he died and the ghosts simply went on moving out of the maze/dungeon.
Really neat game you got there, congratulations!