Interloper is the seventeenth chapter in Black Mesa and the third part in the Xen portion of the game. It follows on from Gonarch's Lair as the player has just bested the beast and now finds them closer to the base of the Interloper tower with it looming over them. The chapter sees the player having to traverse through a landscape fraught with danger at every corner as they make their way towards the Interloper tower and then on into its interior.
I was tasked assisting in the arting of both exterior levels using both rock and foliage passes and later the red infestation to create the imposing hostile landscape the player sees as they traverse closer to the Interloper tower base.
