N+ - Platform: Xbox 360

Achievements:
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Complete the following achievements to unlock Xbox Live Gamerscore points.

Complete 15 Episodes (10 points): Complete 15 Single Player episodes. 
Complete 30 Episodes (15 points): Complete 30 Single Player episodes. 
Complete 40 Episodes (20 points): Complete 40 Single Player episodes. 
Complete all 50 Episodes (25 points): Complete all 50 Single Player episodes. 
Complete 5 Co-op Episodes (15 points): Complete 5 co-op episodes. 
Complete 10 Co-op Episodes (15 points): Complete 10 co-op episodes. 
Speed Demon (20 points): Win 10 races in ranked online matches. 
Survivalist (20 points): Win 10 survival games in ranked online matches. 
Disciple (5 points): Complete one tutorial episode. 
Perfectionist (20 points): Complete an episode without dying in Single Player mode. 
Treasure Hunter (20 points): Complete an episode and obtain every gold piece in 
Single Player mode. 

Additionally there is one secret achievement which is currently unknown.

Secret achievement (15 points): Unknown