Accomplish the indicated achievement to get the number of Gamerscore points:

Training (10 points): Complete all the tutorial challenges. 
Challenges (15 points): Complete all twenty single player deathmatch challenges. 
Bronze Damage (5 points): Deal 500 points cumulative damage to win this award! 
Silver Damage (20 points): Deal 2,000 points cumulative damage to win this award! 
Gold Damage (35 points): Deal 20,000 points cumulative damage to win this award! 
Three Bagger (15 points): Kill three worms with just one shot to bag this award 
(includes damage from oil drums and mines)! 
Body Count (20 points): Send a cumulative total of 100 worms to meet their maker 
and win this award! 
Greedy Worm (15 points): Collect a cumulative total of 50 crates and this award is yours! 
Barrel Buster (15 points): Blow up 25 barrels and receive this award! 
Hot Foot (15 points): Detonate a cumulative total of 25 mines and you'll 'trigger' 
this award! 
Shepherd (15 points): Kill a cumulative total of 15 worms using just the sheep for 
this award...baaa-gain! 
Worm Community (20 points): Play a four player Xbox Live game.