Bowser's Bullet Bill Brigade

Bowser's Bullet Bill Brigade, or World 2-, is the second castle level of Super Mario 3D World and the final one in World 2. It is unlocked via completing Double Cherry Pass, and its own completion frees the Yellow Sprixie Princess who builds a Clear Pipe to World 3.

Layout
This is an autoscrolling level infested with tanks and weapons such as Bullet Bills. It also has many armies of Blocksteppers.

Green Stars

 * Green Star 1: After the first row of tanks, the first green star is guarded by a group of three Fire Piranhas
 * Green Star 2: The second green star is inside a crate on a small tank in the second row of tanks.
 * Green Star 3: After the stamp, there's a large wooden wall with Bowser's face on it. The player can destroy this wall with a cannon to reveal the third green star.

Stamp

 * It's located above a metal gate blocked off by some wooden crates.

Enemies

 * Blocksteppers
 * Bullet Bills
 * Cannons
 * Cannonballs
 * Venus Fire Traps