Mystery Mansion

You are a ghost haunting a mansion that some noisy kids have broken into. Use your phantasmal powers to dispose of the intruders, lest they find your weakness. Scare or injure them to gain ghostly energy.

If those kids perform a ritual with your skull, holy water, and your grave, you  are surely done for! Enlist aid of your zombie companions to make short work of them! (Or drop some furniture on them)

===Controls===
Move: WASD
Spook: Left click/Left shift
Haunt Object: E
Pause: Escape

This is a submission to a game jam developed with the theme "No pain, no gain". As a ghost, you don't feel pain and can't dish it out directly. You also get energy whenever you inflict pain or spook the invading kids. This was made by two people over the course of 38 hours.