Complete the following tasks to unlock Apple Game Center achievements.

Achievement	How to unlock
Broteus Maximus (10 points)	Collect 1,000 Xplodium in one play of Arcade.
Cannon Fodder (5 points)	Kill 100 Enemies.
Fear my Bro (15 points)	Complete Campaign 7.
Friend Indeed (5 points)	Add 1 Bro to your Brotherhood.
Getting Stronger (10 points)	Complete Campaign 4.
Gun Baby (5 points)	Complete Campaign 1.
Gussied (5 points)	Collect a matching set of armor.
No Object (10 points)	Spend over 10,000 Xplodium.
Ravager (10 points)	Kill 500 Enemies.
Scratch my Back (5 points)	Team up with another Bro in Multiplayer Arcade.
Upgrade! (5 points)	Upgrade a gun.