|Eighth dark storyline level, Sonic Adventure 2|
|Level theme: industrial|
| Mission 1: Steal the three Chaos Emeralds|
in 5 minutes!
| Mission 2: Collect 100 rings!
| Mission 3: Find the lost Chao!
| Mission 4: Get the Emeralds within 3 minutes|
|Mission 5: Clear Hard Mode!|
Security Hall is the eighth stage in the Dark storyline of Sonic Adventure 2 and the third stage playable with Rouge. It represents Rouge's attempt to find three Chaos Emeralds hidden inside GUN's base.
Security Hall is located inside the GUN base, having a military facility vault room theme. The walls are made of metal, so it’s worth noting that it’s not possible to dig anywhere on this level. Air ducts, metal fences, giant boxes, and platforms are scattered across the rooms. Additional security is provided by still or sweeping lasers, which burn and will harm Rouge if touched.
The major gimmick of this level is the safes, which are locked and can be unlocked by throwing the correspondent switch. To open the safe, Rouge needs to grab onto the safe and dig into the centre of the flashing GUN insignia. In the Dreamcast version only, Screw Kick next to a safe will also open the safe, even if it's locked. In addition, the level has a 5-minute time limit, which works just like the time limits in Green Forest, White Jungle, and every 4th mission. Eggman will chime in intermittently as the level goes on:
Other level specific-objects are fans that blow money that can be floated on, pulleys, pressure tanks that can be destroyed, the larger ones needing more than one hit to destroy, and packages and skulls that can be picked. Another curious observation is the fact that Rouge’s breath is visible, which is a sign that the place is supposed to be cold enough for such a thing to happen.
Security Hall is divided into two major sections.
The first section is where the safes are located. It’s U-shaped and divides into three-sub sections according to height, each one colour coded for convenience. The lowest level is the “Red floor”, the medium is the “Yellow floor” and finally, the highest is the “Blue floor”. Rouge starts in the Red floor. Each level is in turn divided into "A", "B" and "C" block, the first to the farthest left part of the U-shape and the last to the farthest right part, with the second in the middle of both. Rouge starts in the boundary between “B” and “C” blocks. There's a Mystic Melody on Yellow floor, C block, which will make a path to a gap on the wall opposite to it, where Rouge's Treasure Scope upgrade is.
The second section is a room located above the safe room, called the “Switch room”, where the switches to open each safe are. The red one is located at the farthest left, the yellow in the middle and the blue in the farthest right. High above the red area there's a ledge with another Mystic Melody, which accesses 40 rings, easily grabbed by an electric shield located nearby, in a wooden container. There are some platforms suspended on the air above the yellow area, accessible by hitting a spring visible with the Treasure Scope.
|2||Above blue floor, C block: Inside a cage on a high floating platform. Another such platform holds a missile to break this cage.|
Switch Room: On the northwest GUN waste crate, in the yellow switch area.
|1||Blue floor: On the metal crate located at the boundary of B and C block.|
|1||Red floor, C block: Inside a closed safe, one position down and to the right of the open safe.|
|Random*||12||Red floor, A block: In a pipe over the metal crate closest to the inside corner.|
Red floor, B block: Inside a package Rouge can pick up, after opening the upper row safe just to the left of the falling weight (when looking at the wall of safes).
Red floor, C block: Inside a package Rouge can pick up, in the open safe from the central group of C block safes.
Yellow floor, A block: Inside the wooden container.
Yellow floor, B block: Inside a package Rouge can pick up, in the open safe on the lower row just before the moving weight (when moving toward the corner of A and B blocks).
Yellow floor, B block: Inside a package Rouge can pick up, after opening the lower row safe in the middle column of safes (two positions to the right and one position down from the safe that's obstructed by an air duct).
Yellow floor, C block: Inside a package Rouge can pick up, in the open upper row safe directly beneath the air duct.
Yellow floor, C block: Inside a second package in the same safe as the previously mentioned animal.
Blue floor, A block: Inside a package Rouge can pick up, in the open safe directly to the left of the air duct.
Above blue floor, A block: Inside the metal box in an L formation with two wooden boxes, on a high floating platform.
Switch Room: Inside a package Rouge can pick up, just in front of the moving weight on the right side of the upper floor.
Top of Switch Room: Whistle next to the Mystic Melody pedestal, which is high above the red floor's switch.
*The Tiger appears randomly.
The level specific animal (third Chao container) is a Phoenix.
At the beginning, jump over the right rail and float above the fans at the upper left corner, closer to the bar wall. Big is seen under the floor, holding onto the wall below. Careful Drill Driving under the floor, followed by a glide toward the central pillar, will allow a better look, although actaully descending as far down the wall as Big is will result in death. In Hard Mode, Big appears clutching on the money fan on front of it instead.
|#1 (red)||Dancing wind.|
Drive into the wind.
|#2 (purple)||A place which is protected by lasers.|
Screw Kick the middle of the four tiles.
|#3 (light blue)||No one can open that safe!|
There should be a way to disarm the trap...
The Gold Beetle can be found halfway up the narrow bottleneck when Rouge grabs the upreel to access the Switch room.
In the Switch room, yellow area, put the sunglasses close to the "B" block sign on the front edge. Hit the spring to access the higher platform.
Rouge's Treasure Scope upgrade can be found in this level, though the Iron Boots and Mystic Melody will usually be a prerequisite to finding it. It's in a room accessible by playing the Mystic Melody close to the ruins in the Yellow floor, C block; follow the platforms that appear, destroy the metal containers and finally enter the room.
A map which revels the location of every ring in the level.
|Sonic Adventure 2|
Main (SA2B) (2012)
Enemies and Obstacles: