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

Amateur Paintballer (150 points): Finish the Career on Amateur difficulty 
level. 
Semi-Pro Paintballer (150 points): Finish the Career on Semi-Pro difficulty 
level. 
Pro Paintballer (200 points): Finish the Career on Pro difficulty level. 
World Tour (80 points): Play a game of paintball in all the Career and 
Woodsball locations. 
Training Buff (30 points): Complete all training stages. 
Communication Skill Proficency (50 points): Max out the main character's 
Communication Skill. 
Handling Skill Proficency (40 points): Max out the main character's Marker 
Skill. 
Reload Skill Proficency (40 points): Max out the main character's Reload 
Skill. 
Speed Skill Proficency (40 points): Max out the main character's Speed Skill. 
Accuracy Skill Proficency (40 points): Max out the main character's Accuracy 
Skill. 
Woodsball Chief (50 points): Win at least 50 Woodsball Ranked Matches over 
Xbox LIVE. 
Speedball Chief (50 points): Win at least 50 Speedball Ranked Matches over 
Xbox LIVE. 
Predator (80 points): Make at least 200 eliminations in multiplayer matches.