Very simple, yet very charming game ! I like the work on ambience and colors. And the music is very soothing, did you compose it ? It just lacks other sounds, for when we die and win for example.
The concept is good, and kinda fits the theme eventhough it's not perfect.
I would really like to see you use what you learned from it to transform it into an almost horror game, with a bigger map, and more predictable enemies.
Overal, good job !