Silent Hill HD Collection achievements

Silent Hill HD Collection

4.2 from 609 votes

There are 50 Silent Hill HD Collection achievements worth 2,129 (1,000)

5,886 tracked gamers have this game, 311 have completed it (5.28%)

Achievement Details

I.Q. Test in Silent Hill HD Collection

I.Q. Test84 (30)

Complete SH2 on Extra Riddle difficulty.

  • Unlocked by 755 tracked gamers (13% - TA Ratio = 2.79) 5,889  

Achievement Guide for I.Q. Test

Tony Starc
445,499 (261,189)
Tony Starc
Achievement won on 31 Mar 12
TA Score for this game: 1,814
Posted on 25 March 12 at 01:16, Edited on 27 March 12 at 20:05
This solution has 12 positive votes and 0 negative votes. Please log in to vote.
A guide for all of the puzzles on extra riddle difficulty can be found here:

In order to unlock the difficulty you must beat the game on easy, normal, and hard riddle difficulties first. You won't unlock it just from beating hard riddle difficulty. I can confirm this myself. Just to be clear, you have to complete the game 3 different times on 3 different riddle difficulties to unlock it. Make sure you "load" your save data before starting a new game to ensure that your new game is continuing from the right ending file.

Once you beat the difficulties, next time you select hard mode and save you will see you're on "extra" riddle difficulty.
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