Quantum Theory achievements

Quantum Theory

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There are 50 Quantum Theory achievements worth 4,372 (1,000)

5,911 tracked gamers have this game, 95 have completed it (1.61%)

Achievement Details

Secret Achievement in Quantum Theory

Secret Achievement96 (20)

Continue playing to unlock this achievement. (Secret)

  • Unlocked by 257 tracked gamers (4% - TA Ratio = 4.79) 5,921  

Achievement Guide for Secret Achievement

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Posted on 12 July 11 at 21:37
This solution has 10 positive votes and 1 negative vote. Please log in to vote.
This is not my solution I just copied it from x360a.com. All the credit goes to YEWJHIN.

The achievement is called Professional Exterminator and requiers to kill the Gargantua on Hard in 2 minutes 30 seconds or less.

The Gargantua is the spider-like boss at the end of Scene 6. Its weak point is the mouth whenever it opens up to shoot at you, though you still can do somewhat minimal damage when its mouth isn't open. A way to make this fight slightly easier is to play the first parts of the chapter on Easy while conserving ammo, then quit to the title screen when this fight starts. Choose to continue from where you're from and you can change the difficulty to Hard.
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