"Radiation Levels Detected" achievement in The Orange Box

"Radiation Levels Detected"

Get through the toxic tunnel under City 17 in Half-Life 2.

Radiation Levels Detected0
2 guidesOffline Game Mode - These achievements require play in game modes that do not necessitate a connection to any online services.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game modes.

How to unlock the "Radiation Levels Detected" achievement

  • PiemarzPiemarz49,407
    22 Oct 2007 30 Nov 2008 26 Feb 2009
    31 9 6
    This is achievement is unlocked through normal gameplay and is story related so you cannot miss it.
    My only warning is in this section is don't enter the water as it is radioactive and also beware of the 'zombies' as they attack you trying to knock you into the water.

    Guide not helping? View 1 more guide for this achievement.

    Showing most recent comments. View all comments.
    beets101ive given u negative as im way past that and I NEVER encountered the tunnel or snipers in highway 17! there must b 2 ways to do the level.
    Posted by beets101 on 11 Oct 11 at 15:32
    Brettaliusthanks, thumbs up
    Posted by Brettalius on 25 Oct 11 at 19:49
    Stevo6483No idea how beets101 missed this - there is no other way to go. You have to go through the tunnel to unlock a door to progress further lol.
    Posted by Stevo6483 on 23 Nov 16 at 15:59
  • Have you got any tips or tricks to unlock this achievement?
    Add a guide to share them with the community.

    Sign in and add a guide
  • ljp0390ljp0390108,715
    18 Apr 2010 19 Apr 2010
    18 3 2
    This achievement is unlocked during the anticitizen one chapter of half-life 2. It is a story related achievement so it cannot be missed. My suggestion is that you use the gravity gun to place objects and boards around the toxic water since touching it will make you lose health. Also be careful with the mulitple zombies there as they will tend to throw toxic barrels at you. Just get passed this one part and the achievement should pop up.
    Showing both comments.
    drabikAgain, why the negative vote. It says the level you get the achievement!
    Posted by drabik on 19 Apr 10 at 07:45
    ljp0390Yeah I was just wondering that. Ohh well I guess you cant please everyone.
    Posted by ljp0390 on 19 Apr 10 at 10:52
Do you have a question about this achievement? Please post it in the The Orange Box Forum