Wow, this is intense! One of the best entries this LD! Though I personally do not like point & clic adventures, this one pulled me inside a whole world and i will definitely play it again.
Awesome graphics, really great sound (minimalistic though powerful -- the tunder really creeped me out), perfect timing & Storyline and interesting characters, which really come to life. Please keep doing such work!
Since you directly asked for things to improve: the scenery could be a little bit more active, e.g. the lamp flickering or some fireflies on the first day. But this is criticism on a very very high level which will not be in the score.