Final Chase is the fourteenth stage in the Dark storyline of Sonic Adventure 2 and the fourth and last stage playable with Shadow. It represents Shadow's run through the ARK's underside to intercept Sonic after finding out he's alive and heading towards the Eclipse Cannon. It is the equivalent to Sonic's stage, Final Rush.
After finding out that he may not be the real Shadow and that Rouge is a government agent, Eggman informs him that someone is headed for the Eclipse Cannon. Shadow immediately heads out to destroy the intruder.
This stage consists of numerous rails but the main gimmick of this stage are "gravity cylinders". These cylinders have a magnetic pull that draws Shadow to them. They only allow one direction when running on them: up or down. Some parts of the stage completely consist of these gravity cylinders.
Level Up Item
Shadow's Mystic Melody Level Up Item can be found here. It is on a small platform at the highest point in the green cylinder area.
Collect 100 Rings
There are plenty of Super Rings scattered all over this stage. Just avoid unnecessary battles to lessen the possibility of losing Rings, and beware of the Meteorites near the spinning drums.
Find the Lost Chao
After the sixth Point Marker, navigate a series of horizontal spinning drums until Shadow reaches a Pulley. Use the Pulley to reach a vertical spinning drum, and climb it to the top. When the player gets there, instead of using the Spring there, grab onto another Pulley. This Pulley leads to a platform where an Ancient Ruin is. Play the Mystic Melody there to make a row of Rings appear. Light Speed Dash across them to reach another vertical spinning drum. At the top of this drum is a Pulley that leads to the Lost Chao.
Reach the Goal within 5:30
Successful completion of this mission depends on how quickly the player can navigate the spinning drums. Jump off of them at the earliest opportunity, and skip over as many of them as possible. For instance, when going down a steep hill, jump from the top of it and push forward on the Control Stick to skip substantial chunks of this stage. Also, as always, do not take any extra time going after enemies or Rings.
Clear Hard Mode
This mission is quite difficult for a couple of reasons. First and foremost, there are a lot more Artificial Chaos, and their tendrils have a much greater range. Secondly, there are now enemies waiting at the top of many of the spinning drums. Also, some of the spinning drums can now only be reached via short Grind Rails or floating Springs. Proceed with caution and always make precise movements.
Chao Container locations
After passing the first Point Marker and climbing the first vertical spinning drum, the player will eventually come to a tunnel. Before going though the tunnel, drop down on the catwalk on the left, and walk toward the screen until the first Chao Container appears.
After passing the third Point Marker, look in front of the vertical spinning drum on the right to find the second Chao Container.
After passing the fifth Point Marker, the Chao Container can be found on the back of the platform. This location is positioned at the end of the section where the player moves across a series of spinning drums between the walls of the Space Colony ARK.
Big the Cat sighting
After the sixth Point Marker, there will be a Spinning drum section that leads past it. Inside the first spinning drum, close to the beginning of it, the player can spot Big the Cat.