Railbreak

Completed Story Mode in a single playthrough on Hard difficulty

Completed Story Mode in a single playthrough on Off the Rails difficulty

Achieved Max Rank on Act III in Score Attack

Achieved Max Rank on Act V in Score Attack

Cleared Act VI

Clear Act IV

Achieved Max Rank on Act I in Score Attack

Hit an enemy with an explosion

Landed a hit on an enemy's head with a firearm or explosion

Cleared Act II

Achieved Max Rank in Onslaught Mode

Cleared Act III

Achieved Max Rank on Act IV in Score Attack

Achieved Max Rank on Act VI in Score Attack

Cleared Act V

Achieved Max Rank on Act II in Score Attack

Unlocked Dominic

Unlocked Falco Jr.

Unlocked Jackie

Cleared Act I

Unlocked Zarina

Unlocked Miranda

Unlocked Michiko

Unlocked Tucker

Landed a hit on an enemy's leg with a firearm or explosion