This is the first time that anyone has entered the ARK in a very long time. Therefore, everything is shut down, so it's hard to see. Eggman must shoot enemies, causing explosions, creating light that will last for a few seconds. The stage is full of G.U.N. enemies, and has an area that is practically a maze, where you have to find the way to the floor above, where you also find the Jet Engine upgrade. This upgrade is crucial to making it through the stage.