Custom option
Get a 100% hit head shot status two times in a row to unlock the "Custom" option at the battle mode team setup menu.
Team Power option
Get two head shots in a row to unlock the "Team Power" option at the battle mode menu.
Humans and Creatures option
Have a character on your team get their weapon fully upgraded in single player mode to unlock the "Humans and Creatures" option at the battle mode team types menu. Alternately, have no characters on your team miss during an entire level in single player mode.
Defeat Leader option
Have all team members complete an episode with 100% health to unlock the "Defeat Leader" option at the battle mode objectives menu.