...as if being inside the events of the film could guess about everything that the viewer understands, seeing the full picture from the side. And the characters, here is the trouble, no one scrolled someone else's flashback and did not delay a multi-significant picture on a school teacher under an alarming music - "This is the murderer" - so that such a blowing cheek sofa logic could be outraged, how stupid children-heroes could not recognize the murderer in the teacher!

The IMHO:
Oh, here’s an alien egg, let’s put our heads there!
Have you been to a little explored planet for colonization? Let’s walk there without scatters. by Yuh!
And this is a terrible house, where there is a murderer with a knife / tower / alebard (need to be emphasized), let's split up so that we can all break away quickly alone!

90% of such films are based on people’s stupidity and look more like a comedy than a horror film.