Complete the following achievements to unlock Xbox Live Gamerscore points.

Slayer (10 points): Score over 16,543 points to beat the high score table Centipede - Default difficulty.

Stalker (10 points): Score over 50,000 points Centipede - Default difficulty.

Maniac (20 points): Score over 15,000 Centipede - Throttle Monkey mode.

Spirit (20 points): Have 3 lives in hand Centipede - Default difficulty.

Barren (20 points): Destroy all mushrooms on the screen Centipede - Default difficulty.

Exterminate (20 points): Reach wave 8 without a centipede reaching the bottom Centipede - Default difficulty.

Prowler (10 points): Score over 41,916 to get on the high score table Millipede - Default difficulty.

Marauder (10 points): Score 125,000 points Millipede - Default difficulty.

Lunatic (20 points): Score 25,000 points Millipede - Throttle Monkey mode.

Entity (20 points): Have 3 lives in hand Millipede - Default difficulty.

Poison (20 points): Destroy a spider for 1800 points Millipede - Default difficulty.

Eradicate (20 points): Reach wave 8 without a millipede reaching the bottom Millipede - Default difficulty.