Dual Lasers
- File name sp_a2_dual_lasers
- Appearance The Cold Boot
- Native to Challenge Mode Yes
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Contents
Overview
Dual Lasers is the third map of The Cold Boot. The route is simple and generally easy for most people.
General Route
After circle jumping out of the elevator and wall strafing up the stairs, hop all the way to the door and go through. Shoot a portal on the wall near the ceiling laser receptacle, then place a portal on the wall that is a bit outside of the entrance door. Portal the laser that is top right of the exit door, then shoot a panel below where the camera is, which is to the top left of the exit door. Shoot a portal under the ceiling laser receptacle to perform Laser Switch Glitch, then fall through. Go to the exit door, hug against the door, and while doing so, shoot where you shot before for your first laser, and that will open the door up to let you finish the level.
Challenge Mode Specific
Visualisation of where on the surface above the exit door your portals will land.
The challenge mode route doesn't differ to largely from the general route. Door activation is cycle based, hitting the door trigger as fast as possible is helpful for a more optimized time. Shoot a portal on the wall near the ceiling laser receptacle. Placing the portal low will result in lower time to place the floor portal before hitting the ground. Placing the portal high will result in higher time to place the floor portal before hitting the ground. Landing on the ground will result in a slower time, while falling through the portal can be tricky. You should ease into placing the portal lower on the wall. After you can consistently place the next portal above the door and one on the floor without hitting the ground lower the first wall portal more. The floor portal is very prone to sparking. Falling into the floor portal requires the player to hold their back key to prevent losing control forward. If you end up standing in the floor portal and not falling you are holding your back key to early. If you are constantly falling through and losing control you are holding your back key to late. After you have gone through the floor portal you will need to place the opposite portal on higher laser on the left. This portal can vary drastically and allows for your floor portal to not be directly under the receptacle. While placing this portal you want to be moving backwards towards the door. When you feel you are against the door you will perform a Laser Switch Glitch. You want to perform the switch glitch the instant you are against the door. You place your final portal on the wall opposite of the inactive laser receptacle. Lastly circle jump into the flags.
First door trigger
First wall portal approximation
Final portal approximation
Full Game Specific
This route varies only slightly from the challenge mode route. You still want to activate the door as fast as possible. Place a portal near the ceiling laser receptacle. After coming through the wall you will place a portal on the lower laser next to the door. After that you place the opposite on the floor as to activate the ceiling laser receptacle. You want to be standing directly on top of where you will put the portal as to fall through and head towards the door. The purpose of this is to do a switch glitch as fast as you can so the dialog starts quickly. After you have reached the door you do one final Laser Switch Glitch on the wall opposite of the lower laser receptacle.
First door trigger
First wall portal approximation
- Filedual lasers full game portal.jpg
Full game wall portal placement
Final portal approximation
Full Game Dialogue
The optimal dialogue for the Elevator Fade is entering the elevator between the Glados says "beating"