Have a character on your team get their weapon fully upgraded in single player mode. Alternately, have no characters on your team miss during an entire level in single player mode. This option is unlocked at the battle mode team types menu.

Have all team members complete an episode with 100% health. This option is unlocked at the battle mode objectives menu.

Get a 100% hit head shot status two times in a row. This option is unlocked at the battle mode team setup menu.

Successfully complete the game two times to unlock the level select option.

Get two head shots in a row. This option is unlocked at the battle mode menu.

Press Up(2), Down(2), Left, Right, Left(2), R, L during game play.

Press Up, Left, Down, Left, Down, Up(2), Left during game play.

Press L, Left, L, Left, R, Right, R, Right during game play.

Press Up(6), Down, Right, Up during game play.