Cooperative Testing Initiative/Course 5: Mobility Gels/08 Vault Entrance

Most beginners (or players who made a reset recently) get there from the 07 Propulsion Retrieval, Course 5: Mobility Gels. Players can get there from the Hub when at least one player unlocked the 08 Vault Entrance...

This is the 40th and final Co-op 8th level in the course, Mobility Gels. The level is a final test on all the previous courses, and brings elements from almost every course, such as excursion funnels, portal speed mechanic, gels, two breakers, and much more. The main hazards are Goo, and falling to your death.

At the end of 3rd part is

Mechanics

 * Portalble surfaces
 * Flinging
 * Material Emancipation Grill
 * Heavy Duty Super-Colliding Super Button
 * Thermal Discouragement Beams
 * Circuit Breakers
 * Propulsion Gels
 * Repulsion Gels
 * Pedestal Buttons
 * Excursion Funnel
 * Flip Panels
 * Old Weighted Storage Cube

Hazards

 * Goo
 * Turrets
 * Falling to your death

Bugs
{{spoiler|block=yes|

3rd part
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 * 1) Players can reach a solid panel in front of Circuit Breakers by walking left and forward...

GLaDOS's voice lines

 * 1)  when Atlas and P-body die to the Goo
 * 2)  when Atlas and P-body die to the Goo
 * 3)  when Atlas and P-body die to the Goo
 * 4)  when Atlas and P-body die to the Goo
 * 5)  when Atlas and P-body die to the Goo
 * 6)  when Atlas and P-body die to the Goo
 * 7)  when Atlas and P-body die to the Goo