Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
40 Knives! ( 25 points )	Kill 40 zombies with the bowie knife.
Acquire Waffle Weapons! ( 25 points )	Obtain the Ray Gun, DG-2, and Monkey Bomb at the same time.
Der Electrician! ( 25 points )	Link all teleport pads before round 7.
Elevate Your Senses! ( 25 points )	Activate the Fly Trap.
Frequent Flyer! ( 25 points )	Use the teleporter 8 times.
Locksmith! ( 25 points )	Open all doors in the map.
Pack Addict! ( 25 points )	Upgrade 5 weapons at the Pack a Punch Machine.
Perkaholics Anonymous! ( 25 points )	Survive until round 20 without buying a single Perk.
The Might of the Monkey! ( 25 points )	Use the Monkey Bomb.
Wacker Packer! ( 25 points )	Upgrade any weapon in Pack A Punch.