Dragon Quest Heroes: Rocket Slime

Female Slime tank in challenge mode:
Press Y, R(2), U, L(2), Y, Down(3), Y, Select inside the church.

Helmet Slime tank in challenge mode:
Press Y, L(2), Y, R(2), Y, Up, Down, Select in side the church.

Knightro Cheat:
Head over to the church and enter Y, L, L, Y, R, R, Y, UP, DOWN, SELECT.

The Nemesis Cheat:
Head over to the church and enter Y, R, R, up, L, L, Y, DOWN, DOWN, DOWN, Y, SELECT.

Giggles for Tank Masters mode Unlockable:
Complete the game; afer, talk to Meggan in the northwest building.