Portal: Still Alive/Challenge Map 1

Least Portals

 * 1) Place a orange portal right before the lift and go open the door.
 * 2) Place a blue portal where the ball is hitting the wall and go back the where the first portal is.
 * 3) Quickly duck inside before getting hit.
 * 4) Fire orange portal on the wall and the button near the top. (Third panel from the wall).
 * 5) Quickly jump into the button platform for the portal and wait for the ball to enter.
 * 6) Exit level.