Gray Matter
41 Achievements
1,000
15-20h
Xbox 360
The Experiment
Finished "The Experiment" Puzzle Set Details for this achievement will be revealed once unlocked
20
How to unlock the The Experiment achievement in Gray Matter - Definitive Guide
Sashamorning
TrueAchievements
TrueAchievements
"The Ghost of Dread Hill"
This is a story related achievement, but secret. You'll get it during chapter 6, after speaking with Mrs. Dalton in the kitchen.
This is a story related achievement, but secret. You'll get it during chapter 6, after speaking with Mrs. Dalton in the kitchen.
Corrupt, x360a, TheInsanityInc
Story related, can’t miss. Chapter 5, after “What Happened the Day Before” and very easy. Go home, talk to Mrs. Dalton about Sam. Then go to the experiment room via the Main Lab and use the computer. Select session one, set the time to 11:30, then check through the readings. Achievement will pop when you select “45s” (4th window).
