Perform all 8 Nite Owl combos within 60 seconds.
Perform all 8 Rorschach combos within 60 seconds.
Complete the game in Co-operative mode.
Sustain a single rage mode for 60 seconds.
Eliminate an enemy that your partner has knocked down or thrown in your direction.
Complete the game as Nite Owl.
Complete the game as Rorschach.
Take down 10 enemies in a row finishing off each of them before doing damage to anybody else.
Hit 14 enemies with a single electrify armor blast.
Hit at least 4 different enemies while building up a combo.
String a single uninterrupted combo that's at least 10 hits long.
Complete Chapter III without hitting any ladies before they hit you.
