Accomplish the indicated achievement to get the corresponding number of Gamerscore points:
- Morally Superior (36 points): Complete the game as Nite Owl.
- Street Justice (36 points): Complete the game as Rorschach.
- Friends Forever? (36 points): Complete the game in Co-operative mode.
- Martial Artist (15 points): Perform all 8 Nite Owl combos within 60 seconds.
- Feral Fighter (15 points): Perform all 8 Rorschach combos within 60 seconds.
- You Tag 'em - I Bag 'em (11 points): Eliminate an enemy that your partner has knocked down or thrown in your direction.
- Focus Fire (11 points): Take down 10 enemies in a row finishing off each of them before doing damage to anybody else.
- Electric Explosion (8 points): Hit 14 enemies with a single electrify armor blast.
- Rrarararghgh!!! (8 points): Sustain a single rage mode for 60 seconds.
- Ping Pong (8 points): Hit at least 4 different enemies while building up a combo.
- Unending Combo (8 points): String a single uninterrupted combo that's at least 10 hits long.
- Gentleman (8 points): Complete Chapter III without hitting any ladies before they hit you.