TechLookz

Remove backround grid or change jewel types:
Hold LB, LT, RB, RT then press B button to remove grid or press A to change jewel types.

Cognito Mode:
To unlock Cognito Mode finish all the puzzles in Puzzle mode. It is okay to look at hints constantly to solve all the puzzles. Cognito Mode is basically Puzzle Mode with no hints.

Finity mode:
Complete 280 levels of Endless mode.

Hyper mode:
Complete 8 levels in Action mode.

Twilight mode:
Complete 17 levels in Classic mode.

Achievements:
To get all the achievements in the game, do the following things:

Unlockable - How to Unlock:
Action mode Get to level 9 in action mode
Cascade 8 Get a x8 cascade during any game mode
Classic mode Get to level 18 in classic mode
Cognito mode Collect 50,000 in cognito mode
Endless mode Finish level 280 in endless mode
Finity mode Get to level 9 in finity mode
Hyper mode Get to level 9 in hyper mode
Hyper1000 Make 1,000 power gems across all your games
Multi mode Twilight, Hyper, Cognito, and Finity mode
Power10000 Make 10,000 power gems across all your games
Puzzle mode Finish all 80 levels in puzzle mode
Twilight mode Finish level 10 in twilight mode

Gamerscore Points:

Action:
Make it to stage 9 in action mode

Cascade 8:
Acquire a x8 cascade during any mode.

Classic Mode:
Make it to stage 18 in classic mode

Cognito Mode:
Acquire 50,000 in Cognito Mode

Endless Mode:
Complete level 280 in endless mode.

Finity Mode:
Make it to stage 9 in finity mode.

Hyper Mode:
Make it to stage 9 in hyper mode.

Hyper1000:
Acquire 1,000 power gems across all your games.

Multi Mode:
wilight, Hyper, Cognito, and Finity mode.

Power10000:
Acquire 10,000 power gems across all your games.

Puzzle Mode:
Complete all 80 stages in puzzle mode.

Twilight Mode:
Complete level 10 in twilight mode.