The Orange Box
Game
2,184
(1,000)

The Orange Box

4.3 from 8818 votes
 

80,167 tracked gamers have this game, 1,925 have completed it (2.40%) | 364 want to boost

There are a maximum of 99 The Orange Box achievements worth 2,184 (1,000)

Achievement Details

Secret Achievement Achievement in The Orange Box

Secret Achievement8 (5)

Offline Required - This achievement requires play in offline game modesSingle Player - This achievement can be obtained in single player game modesMain Storyline - This achievement is gained automatically by progressing through the main game mode
Continue playing to unlock this secret achievement. (Secret)

0.0Show secret details | Earn this in the The Orange Box Walkthrough

Achievement Guide for Secondary Silo Secured

AuthorSolution
L33tSpriggs
32,700
L33tSpriggs
Achievement won offline
TA Score for this game: 765
Posted on 28 January 10 at 06:58
 This solution has 17 positive votes and 0 negative votes. Please log in to vote.
When you have FINALLY reached the white forest base after a while you will be told to go and check the silo doors on silo 2. THe combine attack around half way through this excursion an you now have to rush to sucure the silo doors and prevent any more combine from flooding in. Once you have gotten to the top of missile silo 2 and activated the silo doors you'll get the achievement. This is story related, so if you just play through episode 2 you'll get it.
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