In the room at the end of the first level with the grey door leading to thesecond level, there is a secret passage. Immediately upon entering, turnright. In the corner of the right wall and the wall with the door that youjust came through, press the SPACEBAR near the right wall to reveal asecret passage. Head straight until you hit a wall. Turn right and pressthe SPACEBAR again to reveal a second passage. There will be a grey doorin this room leading to a secret level with purple walls.