I really like the concept, together with how it plays. Although pressing 1 makes me faster (for debug purposes) but I think leaving that on that speed as default would let the player explore faster making it more fun and less repetitive walking through the forest. The zombies will need to have a faster speed then as well.
And when the zombie becomes visible, a bit of feedback like screen shake would add a lot as well for the scary feel.
In general really well done (with godot as well so really props for that <3).
I enjoyed it!