From The Chobots Wiki

The Nicho Mission was the second mission and Final official mission added in Chobots that could be accessed from the Missions Agency. The goal of the mission was to make it to the end of the maze, and prevent the Nichos from stopping the Chobots' operation.

Once inside of the mission, it required the Head Lamp item in order to see, or the user could use a magic item to temporarily see.