The use of the light fits the theme, making ghosts & monsters run away if you light them is a good point.
I liked the aesthetics of monsters & ghosts.
Over that, the sounds wasn't really good, especially the "capture sound", it is way too loud compared to the main music.
The 3 levels feel about the same, it would be nice to add some features over the levels (I saw the light radius changed sometimes in level 3).
Finally some feedbacks when you got hit by monsters and few invulnerabilities frames would be great, sometimes I got all my life eaten very fast by a single ghost following me.
Overall great job for a new developper !