Achievements
Complete each achievement to get the allotted gamerscore:
Battle Tested (10) - Beat the computer in Battle mode on any difficulty level
Hot Potato (10) - Defuse a single one of your opponent's bombs three times (Battle mode, local or Xbox Live)
Human Superiority (30) - Conquer the Expert computer opponent in Battle mode
Marathon Master (40) - Beat Marathon mode by making a cluster, line or flower of Black Pearls
Playing the Field (5) - Complete a game in each game mode (Marathon, Timed, Survival, Battle)
Really Special (20) - Make a Ruby
She's Gonna Blow! (15) - Create a chain reaction explosion of three or more special pieces (any game mode)
Show No Mercy (10) - Use every type of attack in a single Battle (local or Xbox Live)
So Special it Hurts (25) - Make a Black Pearl
Special Score (5) - Make an Emerald and a Star in the same game (any game mode)
Ten Down (20) - Win ten Xbox Live Ranked matches
Top Off the Tank (5) - Fully charge each attack energy well in a single Battle (local or Xbox Live)