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

Shishin's Technique (10 points): Clear the game using Shishin.
Kosame's Technique (10 points): Clear the game using Kosame.
Gensuke's Technique (10 points): Clear the game using Gensuke.
The Great Statue (5 points): Destroy the Great Statue in Stage 3!
Money Grubber (10 points): Connected a 10,000 coin combo!
Cash Fiend (20 points): Connect a 30,000 coin combo!
Grind for the Gold! (15 points): Score 25,000,000 points!
Pocket Change (15 points): Collect 1000 coins during a boss battle.

Additionally, there are four secret achievements:

Secret achievement (10 points): Unknown.
Secret achievement (50 points): Unknown.
Secret achievement (25 points): Unknown.
Secret achievement (20 points): Unknown.