Unlock the following bonuses by completing the corresponding campaigns in single player mode under the listed difficulty settings:
BONUS - CAMPAIGN Concept art pack #1 - Campaign 3-4 under the normal difficulty setting. In-depth character profiles #1 - Campaign 1-1 under the easy difficulty setting. In-depth character profiles #4 - Campaign 4-4 under the easy difficulty setting. Jukebox - Campaign 2-4 under the normal difficulty setting. Multi-player Character Cobar - Campaign 4-4 under the hard difficulty setting. Multi-player Character Evelyn - Campaign 4-4 under the normal difficulty setting. Wallpaper pack #1 - Campaign 1-4 under the easy difficulty setting.
