The Factory is a place to get merits, gag expierience, and sellbot cog suit parts. The objective is to go through the factory defeating cogs and finding and destroying the foreman and the 3 Cogs that are with it. If you do it 10 times then you gain the cog suit. The most popular, long way, is to go through the Front entrance, Lobby, Lobby Hallway, Gear Room, Boiler Room, Pipe Room, Duct Room, Stomper Alley, Oil Room, Warehouse, East and West Silos, and finally the Foreman. The short way is to go through either the Front Entrance, Lobby, Lobby Hallway, Boiler Room, Warehouse, East and West Silos, and the Foreman; or the Side Entrance, Duct Room, Stomper Alley, Oil Room, Warehouse, East and West Silos, and the Foreman. A glitch can help you skip the gear room, and (if you're lucky) the east and west silos.
None of the rooms in the factory, show actual cog production.
The factory has some mixed Skelecogs and Cogs in battles.
The highest level Cog in the Factory is level 9.
All the battles except the final four can be destroyed with a Fog Horn.
A long factory with an invasion at the end will give you 776 merits, but without an invasion it will only give you 388.