Shell Brigade, Move Out!
From the Super Mario Wiki, the Mario encyclopedia
Shell Brigade, Move Out! is the second secret level of the Beanbean Kingdom in the Minion Quest: The Search for Bowser mode in Mario & Luigi: Superstar Saga + Bowser's Minions. In order to obtain this level, the player has to use certain amiibo to unlock it.
The level mostly consists of mostly Koopa Troopas alongside both variations of Koopa Paratroopas and has two battles. The first battle has three Koopa Troopas, four green Koopa Paratroopas, and a red Koopa Paratroopa captain. The second battle has two Koopa Troopas at the front, five red Koopa Paratroopas at the back, and a Koopa Troopa captain.