Complete your first "extra thing to do"

Unlock all weapons

Kill 1989 enemies

Get an A+ on any chapter

Perform an 8x combo

Hit an enemy with a weapon bounced against a wall

Throw a weapon at an enemy so that his weapon hits another

Complete Digit Chase Rear Touch Panel Stage in 20 seconds or under.

Complete Digit Chase Tap Stage in 30 seconds or under.

Completed Episode 21.

Discovered every manhole.

Collected a total of 20,000 precious gems.

Completed Episode 18.