Two player game in single player mode:
Complete two veteran levels, such as the topmost and
the leftmost battlefields. Press Left at the map screen, and the
battlefield highlighting will disappear. Begin game play to start
on the two player battlefields.
Quick targeting: Enter the cannon stage. Attempt to place a cannon five
times at a location that cannot accept a cannon. The firing stage
will begin with the crosshairs directly over this location.
Clearing old castle parts: Clear old castle wall remnants by shooting them during
the cannon stage.
