Version 1.7 changelog:

Fixed you are getting kicked with the error that your username is already taken even tho it isn’t
Fixed that only the host can be the player controlled slender
Fixed sounds are sometimes dupplicated
Fixed the music stops

Added console
Added a new house to the map
Added one more page to the map
Added a new feature to slender so he now can kill you from behind

Improved mouse input lag

Increased damage taken from slender

Corrected the player controlled slenders light