Here is the full list of all 10 Keep Talking and Nobody Explodes achievements worth 1,000 gamerscore.
Defuse all bombs in the "Extreme" section.
Defuse all bombs in the "Challenging" section.
Disarm each type of module at least once.
Defuse all bombs in the "Needy" section.
Disarm 100 modules.
Defuse all bombs in the "Moderate" section.
Defuse all bombs in "The Basics" section.
Defuse "The First Bomb"
Defuse all bombs in the "Exotic" section.
Defuse 100 bombs.