Portal Chamber 18 Map Faster Glitch

Test Chamber 18 in only 4 portals (using glitches)

Portal Chamber 18 Map Faster Glitch

Dawson's Garage

Chamber 18 in 16 seconds (OOB) | Portal Speedrun

Portal - Advanced Chamber 18 - Speedrun Route

Portal Chamber 18 Save Load Glitch

How a Non-Speedrunner Can Skip Chamber 18

Portal chamber 18 inbounds in 29 seconds with Edge Glitch (TSA)

Portal Chamber 18 Out of Bounds in 29 seconds with Clipping Glitch (TSA)

Portal - Chamber 18 - Edge Glitch Tutorial

Portal - Chamber 18 - Latest Glitch Route

This is how Chell solve chamber 18..

Portal - Testchamber 18 Advanced - Edge Glitch 1

Ivan Molodetskikh

Bug in Portal - floating portals in chamber 18

Portal Placements for Chambers 18 and 19 (Double Edge glitch/Double LAG)

Guide: Portal Least Time Challenge (Test Chamber 18)

Jimo

Portal: Chamber 18 Speedrun Routes

Portal - Chamber 18 Fast

Charles Caldwell

Portal | Chamber 17 | Fast Solve + Portal Bump Glitch

Portal - Chamber 18 Speedrun

Portal advanced map 18 in 1:12 without glitches