I am trying to get the Transmission Received achievement but in test chamber 18 I found two radios, does this test chamber have two or is this a bug? : r/Portal
Steam Workshop::Portal Test Chamber 18 (Remake)
Portal - Chamber 18 (least portals) - YouTube
Portal/Transmission Received — StrategyWiki | Strategy guide and game reference wiki
Screenshots from the Portal trailer. What do we know about this cut test chamber? : r/Portal
Test Chamber 18 Part 3 - Portal Guide - IGN
Portal/Chamber 18 — StrategyWiki | Strategy guide and game reference wiki
Why Portal RTX is the most demanding game I've ever tested | Digital Trends
Portal: Bonus Maps Test Chamber 18 Advanced - YouTube
Portal Chamber 10 Walkthrough + radio transmissions - YouTube
GLaDOS' testing track (Portal) | Half-Life Wiki | Fandom
Portal Chamber 12 Walkthrough + radio transmissions - YouTube
Hi guys, I was playing portal 1 again and noticed this, a radio appeared on some maps, which, as far as I remember, shouldn't be here, I thought I hadn't noticed before,