Meteor Herd

Meteor Herd is the fourteenth Hero Story level in Sonic Adventure 2. It is the last playable stage as Knuckles. It is also the stage in Dark Story where Rouge fights Knuckles.

Plot
During the hero's trip, their shuttle's cargo bay opens up, causing the pieces of the Master Emerald to fly out into outer space. Upon landing at the ARK (which, due to Knuckles' panicking over the loss of the Master Emerald shards, nearly resulted in his, Sonic, Tails and Amy's deaths), Knuckles heads off to the outside of the colony to find the pieces. After finding them, Knuckles then battles Rouge, who gives him the remaining Master Emerald shards.

Design and Location
Meteor Herd takes place on the outside of the space colony ARK, inside a meteor field. The lowest area is home to many pieces of yellow equipment that appear to be bulldozers of sorts, as well as housing a large tank filled with Lava. Meteors fall from the sky, so it is highly recommended to keep moving. The higher you travel up the level, you come across many small platforms, as well as storage-container like boxes fixed in a floating position in the level.

Upgrades
The Sunglasses can be found here. Near the start area is a large tower at the center of the meteor. At the four faces of this tower are panels that can be broken by punching a meteorite at them. Behind one of these panels is a switch that will open up the floor panels on the tower. Inside this magma chamber is the Sunglasses upgrade.

Trivia

 * In Meteor Heard there is an unused rail in the stage. It's invisible, but if the player hacks and chooses to play as either Sonic or Shadow, they can use it. It starts on the tall structure in the middle. The player must go the middle set of girders, and go to the middle of the girder on the right (as seen from the starting point).