My score: 13456 (come on, it was my first run!)
The lack of sound effects is very noticeable, but you already said you were in the process of adding them.
It is not that scary of a game, but still horror themed in a sense.
It's kinda hard to know how long to hold down when you want to slide under the bird, since you will stop if you slide for too long, so that messed me up alot.
All in all, nice game, needs sound, not that scary but still enjoyable :)