Portal Escape (Part 1)

This is the twenty-first level of the game, and takes place outside Test Chamber 19, in the rusty back stairways and maintenance tunnels of the Aperture Science facility. The player must utilise Flinging and precise portal placement in order to proceed.

Hazards

 * Goo
 * Incinerator
 * Piston

Trivia

 * This part of the escape takes place in the same map as Test Chamber 19.
 * This part of the escape takes place in the same map as Test Chamber 19.
 * This part of the escape takes place in the same map as Test Chamber 19.
 * This part of the escape takes place in the same map as Test Chamber 19.
 * This part of the escape takes place in the same map as Test Chamber 19.