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

Cleared Stage 1 (10 points): Clear Stage 1 in Single Player Arcade Mode. 
Cleared Stage 2 (10 points): Clear Stage 2 in Single Player Arcade Mode. 
Cleared Stage 3 (10 points): Clear Stage 3 in Single Player Arcade Mode. 
Cleared Stage 4 (10 points): Clear Stage 4 in Single Player Arcade Mode. 
Ruby Master (25 points): Complete Single Player Arcade Mode without continues 
using Ruby. 
Sensei Master (25 points): Complete Single Player Arcade Mode without 
continues using Sensei. 
Tempest Master (25 points): Complete Single Player Arcade Mode without 
continues using Tempest. 
"R.A.D." Master (25 points): Complete Single Player Arcade Mode without 
continues using R.A.D. 
30 Second Max Bonus (15 points): Maintain the max bonus for 30 seconds or 
more. 
Don't Let Me Go (15 points): Hold onto an enemy for 10 seconds or longer with 
the anchor using Ruby. 
Untouchable (15 points): Repel 20 or more enemy bullets using Tempest. 
Incredible Restraint (15 points): Go 30 seconds without swinging Sensei's 
sword.