Get a 100% hit head shot status two times in a row. This option is unlocked at the battle mode team setup menu.
Defeat leader option
Have all team members complete an episode with 100% health. This option is unlocked at the battle mode objectives menu.
Humans and creatures option
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.
Level select option
Successfully complete the game two times to unlock the level select option.
Team power option
Get two head shots in a row. This option is unlocked at the battle mode menu.